Bertrand Arthur William Russell, 3rd Earl Russell, OM FRS^[65] (18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, historian, writer, essayist, social critic, political activist, and Nobel laureate.^[66][67] At various points in his life, Russell considered himself a liberal, a socialist and a pacifist, although he also confessed that his sceptical nature had led him to feel that he had "never been any of these things, in any profound sense."^[68] Russell was born in Monmouthshire into one of the most prominent aristocratic families in the United Kingdom.^[69]

In the early 20th century, Russell led the British "revolt against idealism".^[70] He is considered one of the founders of analytic philosophy along with his predecessor Gottlob Frege, colleague G. E. Moore and protégé Ludwig Wittgenstein. He is widely held to be one of the 20th century's premier logicians.^[67] With A. N. Whitehead he wrote Principia Mathematica, an attempt to create a logical basis for mathematics, the quintessential work of classical logic. His philosophical essay "On Denoting" has been considered a "paradigm of philosophy".^[71] His work has had a considerable influence on mathematics, logic, set theory, linguistics, artificial intelligence, cognitive science, computer science (see type theory and type system) and philosophy, especially the philosophy of language, epistemology and metaphysics.

Russell was a prominent anti-war activist and he championed anti-imperialism.^[72][73] Occasionally, he advocated preventive nuclear war, before the opportunity provided by the atomic monopoly had passed and "welcomed with enthusiasm" world government.^[74] He went to prison for his pacifism during World War I.^[75] Later, Russell concluded that war against Adolf Hitler's Nazi Germany was a necessary "lesser of two evils" and criticised Stalinist totalitarianism, attacked the involvement of the United States in the Vietnam War and was an outspoken proponent of nuclear disarmament.^[76] In 1950, Russell was awarded the Nobel Prize in Literature "in recognition of his varied and significant writings in which he champions humanitarian ideals and freedom of thought".^[77][78]

Bertrand Russell was born on 18 May 1872 at Ravenscroft, Trellech, Monmouthshire, into an influential and liberal family of the British aristocracy.^[79] His parents, Viscount and Viscountess Amberley, were radical for their times. Lord Amberley consented to his wife's affair with their children's tutor, the biologist Douglas Spalding. Both were early advocates of birth control at a time when this was considered scandalous.^[80] Lord Amberley was an atheist and his atheism was evident when he asked the philosopher John Stuart Mill to act as Russell's secular godfather.^[81] Mill died the year after Russell's birth, but his writings had a great effect on Russell's life.

His paternal grandfather, the Earl Russell, had been asked twice by Queen Victoria to form a government, serving her as Prime Minister in the 1840s and 1860s.^[82] The Russells had been prominent in England for several centuries before this, coming to power and the peerage with the rise of the Tudor dynasty (see: Duke of Bedford). They established themselves as one of the leading British Whig families, and participated in every great political event from the Dissolution of the Monasteries in 1536–1540 to the Glorious Revolution in 1688–1689 and the Great Reform Act in 1832.^[82][83]

Lady Amberley was the daughter of Lord and Lady Stanley of Alderley.^[76] Russell often feared the ridicule of his maternal grandmother,^[84] one of the campaigners for education of women.^[85]

Russell had two siblings: brother Frank (nearly seven years older than Bertrand), and sister Rachel (four years older). In June 1874 Russell's mother died of diphtheria, followed shortly by Rachel's death. In January 1876, his father died of bronchitis following a long period of depression. Frank and Bertrand were placed in the care of their staunchly Victorian paternal grandparents, who lived at Pembroke Lodge in Richmond Park. His grandfather, former Prime Minister Earl Russell, died in 1878, and was remembered by Russell as a kindly old man in a wheelchair. His grandmother, the Countess Russell (née Lady Frances Elliot), was the dominant family figure for the rest of Russell's childhood and youth.^[76][80]

The countess was from a Scottish Presbyterian family, and successfully petitioned the Court of Chancery to set aside a provision in Amberley's will requiring the children to be raised as agnostics. Despite her religious conservatism, she held progressive views in other areas (accepting Darwinism and supporting Irish Home Rule), and her influence on Bertrand Russell's outlook on social justice and standing up for principle remained with him throughout his life. (One could challenge the view that Bertrand stood up for his principles, based on his own well-known quotation: "I would never die for my beliefs because I might be wrong".) Her favourite Bible verse, "Thou shalt not follow a multitude to do evil" (Exodus 23:2), became his motto. The atmosphere at Pembroke Lodge was one of frequent prayer, emotional repression, and formality; Frank reacted to this with open rebellion, but the young Bertrand learned to hide his feelings.

Russell's adolescence was very lonely, and he often contemplated suicide. He remarked in his autobiography that his keenest interests were in religion and mathematics, and that only his wish to know more mathematics kept him from suicide.^[86] He was educated at home by a series of tutors.^[87] When Russell was eleven years old, his brother Frank introduced him to the work of Euclid, which he described in his autobiography as "one of the great events of my life, as dazzling as first love."^[88][89]

During these formative years he also discovered the works of Percy Bysshe Shelley. Russell wrote: "I spent all my spare time reading him, and learning him by heart, knowing no one to whom I could speak of what I thought or felt, I used to reflect how wonderful it would have been to know Shelley, and to wonder whether I should meet any live human being with whom I should feel so much sympathy".^[90] Russell claimed that beginning at age 15, he spent considerable time thinking about the validity of Christian religious dogma, which he found very unconvincing.^[91] At this age, he came to the conclusion that there is no free will and, two years later, that there is no life after death. Finally, at the age of 18, after reading Mill's Autobiography, he abandoned the "First Cause" argument and became an atheist.^[92][93]

He traveled to the continent in 1890 with an American friend, Edward FitzGerald, and with FitzGerald's family he visited the Paris Exhibition of 1889 and was able to climb the Eiffel Tower soon after it was completed.^[94]

Russell won a scholarship to read for the Mathematical Tripos at Trinity College, Cambridge, and commenced his studies there in 1890,^[95] taking as coach Robert Rumsey Webb. He became acquainted with the younger George Edward Moore and came under the influence of Alfred North Whitehead, who recommended him to the Cambridge Apostles. He quickly distinguished himself in mathematics and philosophy, graduating as seventh Wrangler in the former in 1893 and becoming a Fellow in the latter in 1895.^[96][97]

Russell was 17 years old in the summer of 1889 when he met the family of Alys Pearsall Smith, an American Quaker five years older, who was a graduate of Bryn Mawr College near Philadelphia.^[98][99] He became a friend of the Pearsall Smith family – they knew him primarily as "Lord John's grandson" and enjoyed showing him off.^[100]

He soon fell in love with the puritanical, high-minded Alys, and, contrary to his grandmother's wishes, married her on 13 December 1894. Their marriage began to fall apart in 1901 when it occurred to Russell, while he was cycling, that he no longer loved her.^[101] She asked him if he loved her and he replied that he did not. Russell also disliked Alys's mother, finding her controlling and cruel. It was to be a hollow shell of a marriage. A lengthy period of separation began in 1911 with Russell's affair with Lady Ottoline Morrell,^[102] and he and Alys finally divorced in 1921 to enable Russell to remarry.^[103]

During his years of separation from Alys, Russell had passionate (and often simultaneous) affairs with a number of women, including Morrell and the actress Lady Constance Malleson.^[104] Some have suggested that at this point he had an affair with Vivienne Haigh-Wood, the English governess and writer, and first wife of T. S. Eliot.^[105]

Russell began his published work in 1896 with German Social Democracy, a study in politics that was an early indication of a lifelong interest in political and social theory. In 1896 he taught German social democracy at the London School of Economics.^[106] He was a member of the Coefficients dining club of social reformers set up in 1902 by the Fabian campaigners Sidney and Beatrice Webb.^[107]

He now started an intensive study of the foundations of mathematics at Trinity. In 1898 he wrote An Essay on the Foundations of Geometry which discussed the Cayley–Klein metrics used for non-Euclidean geometry.^[108] He attended the International Congress of Philosophy in Paris in 1900 where he met Giuseppe Peano and Alessandro Padoa. The Italians had responded to Georg Cantor, making a science of set theory; they gave Russell their literature including the Formulario mathematico. Russell was impressed by the precision of Peano's arguments at the Congress, read the literature upon returning to England, and came upon Russell's paradox. In 1903 he published The Principles of Mathematics, a work on foundations of mathematics. It advanced a thesis of logicism, that mathematics and logic are one and the same.^[109]

At the age of 29, in February 1901, Russell underwent what he called a "sort of mystic illumination", after witnessing Whitehead's wife's acute suffering in an angina attack. "I found myself filled with semi-mystical feelings about beauty ... and with a desire almost as profound as that of the Buddha to find some philosophy which should make human life endurable", Russell would later recall. "At the end of those five minutes, I had become a completely different person."^[110]

In 1905 he wrote the essay "On Denoting", which was published in the philosophical journal Mind. Russell was elected a Fellow of the Royal Society (FRS) in 1908.^[65][76] The three-volume Principia Mathematica, written with Whitehead, was published between 1910 and 1913. This, along with the earlier The Principles of Mathematics, soon made Russell world-famous in his field.

In 1910 he became a University of Cambridge lecturer at Trinity College where he studied. He was considered for a Fellowship, which would give him a vote in the college government and protect him from being fired for his opinions, but was passed over because he was "anti-clerical", essentially because he was agnostic. He was approached by the Austrian engineering student Ludwig Wittgenstein, who became his PhD student. Russell viewed Wittgenstein as a genius and a successor who would continue his work on logic. He spent hours dealing with Wittgenstein's various phobias and his frequent bouts of despair. This was often a drain on Russell's energy, but Russell continued to be fascinated by him and encouraged his academic development, including the publication of Wittgenstein's Tractatus Logico-Philosophicus in 1922.^[111] Russell delivered his lectures on Logical Atomism, his version of these ideas, in 1918, before the end of World War I. Wittgenstein was, at that time, serving in the Austrian Army and subsequently spent nine months in an Italian prisoner of war camp at the end of the conflict.

During World War I, Russell was one of the few people to engage in active pacifist activities. In 1916, because of his lack of a Fellowship, he was dismissed from Trinity College following his conviction under the Defence of the Realm Act 1914.^[112] He later described this as an illegitimate means the state used to violate freedom of expression, in Free Thought and Official Propaganda. Russell played a significant part in the Leeds Convention in June 1917, a historic event which saw well over a thousand "anti-war socialists" gather; many being delegates from the Independent Labour Party and the Socialist Party, united in their pacifist beliefs and advocating a peace settlement.^[113] The international press reported that Russell appeared with a number of Labour MPs, including Ramsay MacDonald and Philip Snowden, as well as former Liberal MP and anti-conscription campaigner, Professor Arnold Lupton. After the event, Russell told Lady Ottoline Morrell that, "to my surprise, when I got up to speak, I was given the greatest ovation that was possible to give anybody".^[114][115]

The Trinity incident resulted in Russell being fined £100, which he refused to pay in hope that he would be sent to prison, but his books were sold at auction to raise the money. The books were bought by friends; he later treasured his copy of the King James Bible that was stamped "Confiscated by Cambridge Police".

A later conviction for publicly lecturing against inviting the United States to enter the war on the United Kingdom's side resulted in six months' imprisonment in Brixton prison (see Bertrand Russell's views on society) in 1918.^[116] He later said of his imprisonment:

Russell was reinstated to Trinity in 1919, resigned in 1920, was Tarner Lecturer 1926 and became a Fellow again in 1944 until 1949.^[118]

In 1924, Bertrand again gained press attention when attending a "banquet" in the House of Commons with well-known campaigners, including Arnold Lupton, who had been a Member of Parliament and had also endured imprisonment for "passive resistance to military or naval service".^[119]

In 1941, G. H. Hardy wrote a 61-page pamphlet titled Bertrand Russell and Trinity – published later as a book by Cambridge University Press with a foreword by C. D. Broad – in which he gave an authoritative account about Russell's 1916 dismissal from Trinity College, explaining that a reconciliation between the college and Russell had later taken place and gave details about Russell's personal life. Hardy writes that Russell's dismissal had created a scandal since the vast majority of the Fellows of the College opposed the decision. The ensuing pressure from the Fellows induced the Council to reinstate Russell. In January 1920, it was announced that Russell had accepted the reinstatement offer from Trinity and would begin lecturing from October. In July 1920, Russell applied for a one year leave of absence; this was approved. He spent the year giving lectures in China and Japan. In January 1921, it was announced by Trinity that Russell had resigned and his resignation had been accepted. This resignation, Hardy explains, was completely voluntary and was not the result of another altercation.

The reason for the resignation, according to Hardy, was that Russell was going through a tumultuous time in his personal life with a divorce and subsequent remarriage. Russell contemplated asking Trinity for another one-year leave of absence but decided against it, since this would have been an "unusual application" and the situation had the potential to snowball into another controversy. Although Russell did the right thing, in Hardy's opinion, the reputation of the College suffered due to Russell's resignation since the ‘world of learning’ knew about Russell's altercation with Trinity but not that the rift had healed. In 1925, Russell was asked by the Council of Trinity College to give the Tarner Lectures on the Philosophy of the Sciences; these would later be the basis for one of Russell's best received books according to Hardy: The Analysis of Matter, published in 1927.^[120] In the preface to the Trinity pamphlet, Hardy wrote:

In August 1920, Russell travelled to Soviet Russia as part of an official delegation sent by the British government to investigate the effects of the Russian Revolution.^[121] He wrote a four-part series of articles, titled "Soviet Russia—1920", for the US magazine The Nation.^[122][123] He met Vladimir Lenin and had an hour-long conversation with him. In his autobiography, he mentions that he found Lenin disappointing, sensing an "impish cruelty" in him and comparing him to "an opinionated professor". He cruised down the Volga on a steamship. His experiences destroyed his previous tentative support for the revolution. He subsequently wrote a book, The Practice and Theory of Bolshevism,^[124] about his experiences on this trip, taken with a group of 24 others from the UK, all of whom came home thinking well of the Soviet regime, despite Russell's attempts to change their minds. For example, he told them that he had heard shots fired in the middle of the night and was sure that these were clandestine executions, but the others maintained that it was only cars backfiring.

Russell's lover Dora Black, a British author, feminist and socialist campaigner, visited Soviet Russia independently at the same time; in contrast to his reaction, she was enthusiastic about the Bolshevik revolution.^[124]

The following autumn, Russell, accompanied by Dora, visited Peking (as it was then known in the West) to lecture on philosophy for a year.^[87] He went with optimism and hope, seeing China as then being on a new path.^[125] Other scholars present in China at the time included John Dewey^[126] and Rabindranath Tagore, the Indian Nobel-laureate poet.^[87] Before leaving China, Russell became gravely ill with pneumonia, and incorrect reports of his death were published in the Japanese press.^[126] When the couple visited Japan on their return journey, Dora took on the role of spurning the local press by handing out notices reading "Mr. Bertrand Russell, having died according to the Japanese press, is unable to give interviews to Japanese journalists".^[127][128] Apparently they found this harsh and reacted resentfully.

Dora was six months pregnant when the couple returned to England on 26 August 1921. Russell arranged a hasty divorce from Alys, marrying Dora six days after the divorce was finalised, on 27 September 1921. Russell's children with Dora were John Conrad Russell, 4th Earl Russell, born on 16 November 1921, and Katharine Jane Russell (now Lady Katharine Tait), born on 29 December 1923. Russell supported his family during this time by writing popular books explaining matters of physics, ethics, and education to the layman.

From 1922 to 1927 the Russells divided their time between London and Cornwall, spending summers in Porthcurno.^[129] In the 1922 and 1923 general elections Russell stood as a Labour Party candidate in the Chelsea constituency, but only on the basis that he knew he was extremely unlikely to be elected in such a safe Conservative seat, and he was unsuccessful on both occasions.

Together with Dora, Russell founded the experimental Beacon Hill School in 1927. The school was run from a succession of different locations, including its original premises at the Russells' residence, Telegraph House, near Harting, West Sussex. On 8 July 1930 Dora gave birth to her third child Harriet Ruth. After he left the school in 1932, Dora continued it until 1943.^[130][131]

On a tour through the US in 1927, Russell met Barry Fox (later Barry Stevens), who became a well-known Gestalt therapist and writer in later years.^[132] Russell and Fox developed an intensive relationship. In Fox's words: "... for three years we were very close."^[133] Fox sent her daughter Judith to Beacon Hill School for some time.^[134] From 1927 to 1932 Russell wrote 34 letters to Fox.^[135]

Upon the death of his elder brother Frank, in 1931, Russell became the 3rd Earl Russell.

Russell's marriage to Dora grew increasingly tenuous, and it reached a breaking point over her having two children with an American journalist, Griffin Barry.^[131] They separated in 1932 and finally divorced. On 18 January 1936, Russell married his third wife, an Oxford undergraduate named Patricia ("Peter") Spence, who had been his children's governess since 1930. Russell and Peter had one son, Conrad Sebastian Robert Russell, 5th Earl Russell, who became a prominent historian and one of the leading figures in the Liberal Democrat party.^[76]

Russell returned to the London School of Economics to lecture on the science of power in 1937.^[106]

During the 1930s, Russell became a close friend and collaborator of V. K. Krishna Menon, then secretary of the India League, the foremost lobby in the United Kingdom for Indian self-rule.

Russell opposed rearmament against Nazi Germany. In 1937 he wrote in a personal letter: "If the Germans succeed in sending an invading army to England we should do best to treat them as visitors, give them quarters and invite the commander and chief to dine with the prime minister."^[136] In 1940, he changed his view that avoiding a full-scale world war was more important than defeating Hitler. He concluded that Adolf Hitler taking over all of Europe would be a permanent threat to democracy. In 1943, he adopted a stance toward large-scale warfare: "War was always a great evil, but in some particularly extreme circumstances, it may be the lesser of two evils."^[137][138]

Before World War II, Russell taught at the University of Chicago, later moving on to Los Angeles to lecture at the UCLA Department of Philosophy.^[139] He was appointed professor at the City College of New York (CCNY) in 1940, but after a public outcry the appointment was annulled by a court judgment that pronounced him "morally unfit" to teach at the college due to his opinions, especially those relating to sexual morality, detailed in Marriage and Morals (1929). The matter was however taken to the New York Supreme Court by Jean Kay who was afraid that her daughter would be harmed by the appointment, though her daughter was not a student at CCNY.^[139][140] Many intellectuals, led by John Dewey, protested at his treatment.^[141] Albert Einstein's oft-quoted aphorism that "great spirits have always encountered violent opposition from mediocre minds" originated in his open letter, dated 19 March 1940, to Morris Raphael Cohen, a professor emeritus at CCNY, supporting Russell's appointment.^[142] Dewey and Horace M. Kallen edited a collection of articles on the CCNY affair in The Bertrand Russell Case. Russell soon joined the Barnes Foundation, lecturing to a varied audience on the history of philosophy; these lectures formed the basis of A History of Western Philosophy. His relationship with the eccentric Albert C. Barnes soon soured, and he returned to the UK in 1944 to rejoin the faculty of Trinity College.^[143]

Russell participated in many broadcasts over the BBC, particularly The Brains Trust and the Third Programme, on various topical and philosophical subjects. By this time Russell was world-famous outside academic circles, frequently the subject or author of magazine and newspaper articles, and was called upon to offer opinions on a wide variety of subjects, even mundane ones. En route to one of his lectures in Trondheim, Russell was one of 24 survivors (among a total of 43 passengers) of an aeroplane crash in Hommelvik in October 1948. He said he owed his life to smoking since the people who drowned were in the non-smoking part of the plane.^[144][145] A History of Western Philosophy (1945) became a best-seller and provided Russell with a steady income for the remainder of his life.

In 1942 Russell argued in favour of a moderate socialism, capable of overcoming its metaphysical principles, in an inquiry on dialectical materialism, launched by the Austrian artist and philosopher Wolfgang Paalen in his journal DYN, saying "I think the metaphysics of both Hegel and Marx plain nonsense – Marx's claim to be 'science' is no more justified than Mary Baker Eddy's. This does not mean that I am opposed to socialism."^[146]

In 1943, Russell expressed support for Zionism: "I have come gradually to see that, in a dangerous and largely hostile world, it is essential to Jews to have some country which is theirs, some region where they are not suspected aliens, some state which embodies what is distinctive in their culture".^[147]

In a speech in 1948, Russell said that if the USSR's aggression continued, it would be morally worse to go to war after the USSR possessed an atomic bomb than before it possessed one, because if the USSR had no bomb the West's victory would come more swiftly and with fewer casualties than if there were atom bombs on both sides.^[148][149] At that time, only the United States possessed an atomic bomb, and the USSR was pursuing an extremely aggressive policy towards the countries in Eastern Europe which were being absorbed into the Soviet Union's sphere of influence. Many understood Russell's comments to mean that Russell approved of a first strike in a war with the USSR, including Nigel Lawson, who was present when Russell spoke of such matters. Others, including Griffin, who obtained a transcript of the speech, have argued that he was merely explaining the usefulness of America's atomic arsenal in deterring the USSR from continuing its domination of Eastern Europe.^[144] However, just after the atomic bombs exploded over Hiroshima and Nagasaki, Russell wrote letters, and published articles in newspapers from 1945 to 1948, stating clearly that it was morally justified and better to go to war against the USSR using atomic bombs while the United States possessed them and before the USSR did. In September 1949, one week after the USSR tested its first A-bomb, but before this became known, Russell wrote that USSR would be unable to develop nuclear weapons because following Stalin's purges only science based on Marxist principles would be practiced in the Soviet Union.^[150] After it became known that the USSR carried out its nuclear bomb tests, Russell declared his position advocating for the total abolition of atomic weapons.^[151]

In 1948, Russell was invited by the BBC to deliver the inaugural Reith Lectures^[152]—what was to become an annual series of lectures, still broadcast by the BBC. His series of six broadcasts, titled Authority and the Individual,^[153] explored themes such as the role of individual initiative in the development of a community and the role of state control in a progressive society. Russell continued to write about philosophy. He wrote a foreword to Words and Things by Ernest Gellner, which was highly critical of the later thought of Ludwig Wittgenstein and of ordinary language philosophy. Gilbert Ryle refused to have the book reviewed in the philosophical journal Mind, which caused Russell to respond via The Times. The result was a month-long correspondence in The Times between the supporters and detractors of ordinary language philosophy, which was only ended when the paper published an editorial critical of both sides but agreeing with the opponents of ordinary language philosophy.^[154]

In the King's Birthday Honours of 9 June 1949, Russell was awarded the Order of Merit,^[155] and the following year he was awarded the Nobel Prize in Literature.^[76][87] When he was given the Order of Merit, George VI was affable but slightly embarrassed at decorating a former jailbird, saying, "You have sometimes behaved in a manner that would not do if generally adopted".^[156] Russell merely smiled, but afterwards claimed that the reply "That's right, just like your brother" immediately came to mind. In 1952 Russell was divorced by Spence, with whom he had been very unhappy. Conrad, Russell's son by Spence, did not see his father between the time of the divorce and 1968 (at which time his decision to meet his father caused a permanent breach with his mother).

In 1950, Russell attended the inaugural conference for the Congress for Cultural Freedom, a C.I.A.-funded anti-communist organization committed to the deployment of culture as a weapon during the Cold War.^[157] Russell was one of the best known patrons of the Congress, until he resigned in 1956^[158]

Russell married his fourth wife, Edith Finch, soon after the divorce, on 15 December 1952. They had known each other since 1925, and Edith had taught English at Bryn Mawr College near Philadelphia, sharing a house for 20 years with Russell's old friend Lucy Donnelly. Edith remained with him until his death, and, by all accounts, their marriage was a happy, close, and loving one. Russell's eldest son John suffered from serious mental illness, which was the source of ongoing disputes between Russell and his former wife Dora.

In September 1961, at the age of 89, Russell was jailed for seven days in Brixton Prison for "breach of peace" after taking part in an anti-nuclear demonstration in London. The magistrate offered to exempt him from jail if he pledged himself to "good behaviour", to which Russell replied: "No, I won't."^[159][160]

In 1962 Russell played a public role in the Cuban Missile Crisis: in an exchange of telegrams with Soviet leader Nikita Khrushchev, Khrushchev assured him that the Soviet government would not be reckless.^[161] Russell sent this telegram to President Kennedy:

According to historian Peter Knight, after JFK's assassination, Russell, "prompted by the emerging work of the lawyer Mark Lane in the US ... rallied support from other noteworthy and left-leaning compatriots to form a Who Killed Kennedy Committee in June 1964, members of which included Michael Foot MP, Caroline Benn, the publisher Victor Gollancz, the writers John Arden and J. B. Priestley, and the Oxford history professor Hugh Trevor-Roper." Russell published a highly critical article weeks before the Warren Commission Report was published, setting forth 16 Questions on the Assassination and equating the Oswald case with the Dreyfus affair of late 19th-century France, in which the state wrongly convicted an innocent man. Russell also criticised the American press for failing to heed any voices critical of the official version.^[163]

Bertrand Russell was opposed to war from early on, his opposition to World War I being used as grounds for his dismissal from Trinity College at Cambridge. This incident fused two of his most controversial causes, as he had failed to be granted Fellow status, which would have protected him from firing, because he was not willing to either pretend to be a devout Christian, or at least avoid admitting he was agnostic.

He later described the resolution of these issues as essential to freedom of thought and expression, citing the incident in Free Thought and Official Propaganda, where he explained that the expression of any idea, even the most obviously "bad", must be protected not only from direct State intervention, but also economic leveraging and other means of being silenced:

Russell spent the 1950s and 1960s engaged in political causes primarily related to nuclear disarmament and opposing the Vietnam War. The 1955 Russell–Einstein Manifesto was a document calling for nuclear disarmament and was signed by eleven of the most prominent nuclear physicists and intellectuals of the time.^[165] In 1966–1967, Russell worked with Jean-Paul Sartre and many other intellectual figures to form the Russell Vietnam War Crimes Tribunal to investigate the conduct of the United States in Vietnam. He wrote a great many letters to world leaders during this period.

In 1956, immediately before and during the Suez Crisis, Russell expressed his opposition to European imperialism in the Middle East. He viewed the crisis as another reminder of the pressing need for a more effective mechanism for international governance, and to restrict national sovereignty to places such as the Suez Canal area "where general interest is involved". At the same time the Suez Crisis was taking place, the world was also captivated by the Hungarian Revolution and the subsequent crushing of the revolt by intervening Soviet forces. Russell attracted criticism for speaking out fervently against the Suez war while ignoring Soviet repression in Hungary, to which he responded that he did not criticise the Soviets "because there was no need. Most of the so-called Western World was fulminating". Although he later feigned a lack of concern, at the time he was disgusted by the brutal Soviet response, and on 16 November 1956, he expressed approval for a declaration of support for Hungarian scholars which Michael Polanyi had cabled to the Soviet embassy in London twelve days previously, shortly after Soviet troops had already entered Budapest.^[166]

In November 1957 Russell wrote an article addressing US President Dwight D. Eisenhower and Soviet Premier Nikita Khrushchev, urging a summit to consider "the conditions of co-existence". Khrushchev responded that peace could indeed be served by such a meeting. In January 1958 Russell elaborated his views in The Observer, proposing a cessation of all nuclear-weapons production, with the UK taking the first step by unilaterally suspending its own nuclear-weapons program if necessary, and with Germany "freed from all alien armed forces and pledged to neutrality in any conflict between East and West". US Secretary of State John Foster Dulles replied for Eisenhower. The exchange of letters was published as The Vital Letters of Russell, Khrushchev, and Dulles.^[167]

Russell was asked by The New Republic, a liberal American magazine, to elaborate his views on world peace. He urged that all nuclear-weapons testing and constant flights by planes armed with nuclear weapons be halted immediately, and negotiations be opened for the destruction of all hydrogen bombs, with the number of conventional nuclear devices limited to ensure a balance of power. He proposed that Germany be reunified and accept the Oder-Neisse line as its border, and that a neutral zone be established in Central Europe, consisting at the minimum of Germany, Poland, Hungary, and Czechoslovakia, with each of these countries being free of foreign troops and influence, and prohibited from forming alliances with countries outside the zone. In the Middle East, Russell suggested that the West avoid opposing Arab nationalism, and proposed the creation of a United Nations peacekeeping force to guard Israel's frontiers to ensure that Israel was prevented from committing aggression and protected from it. He also suggested Western recognition of the People's Republic of China, and that it be admitted to the UN with a permanent seat on the UN Security Council.^[167]

He was in contact with Lionel Rogosin while the latter was filming his anti-war film Good Times, Wonderful Times in the 1960s. He became a hero to many of the youthful members of the New Left. In early 1963, in particular, Russell became increasingly vocal in his disapproval of the Vietnam War, and felt that the US government's policies there were near-genocidal. In 1963 he became the inaugural recipient of the Jerusalem Prize, an award for writers concerned with the freedom of the individual in society.^[168] In 1964 he was one of eleven world figures who issued an appeal to Israel and the Arab countries to accept an arms embargo and international supervision of nuclear plants and rocket weaponry.^[169] In October 1965 he tore up his Labour Party card because he suspected Harold Wilson's Labour government was going to send troops to support the United States in Vietnam.^[76]

In June 1955 Russell had leased Plas Penrhyn in Penrhyndeudraeth, Merionethshire, Wales and on 5 July of the following year it became his and Edith's principal residence.^[170]

Russell published his three-volume autobiography in 1967, 1968, and 1969. Russell made a cameo appearance playing himself in the anti-war Hindi film Aman, by Mohan Kumar, which was released in India in 1967. This was Russell's only appearance in a feature film.^[171]

On 23 November 1969 he wrote to The Times newspaper saying that the preparation for show trials in Czechoslovakia was "highly alarming". The same month, he appealed to Secretary General U Thant of the United Nations to support an international war crimes commission to investigate alleged torture and genocide by the United States in South Vietnam during the Vietnam War. The following month, he protested to Alexei Kosygin over the expulsion of Aleksandr Solzhenitsyn from the Soviet Union of Writers.

On 31 January 1970 Russell issued a statement condemning "Israel's aggression in the Middle East", and in particular, Israeli bombing raids being carried out deep in Egyptian territory as part of the War of Attrition. He called for an Israeli withdrawal to the pre-Six-Day War borders. This was Russell's final political statement or act. It was read out at the International Conference of Parliamentarians in Cairo on 3 February 1970, the day after his death.^[172]

Russell died of influenza on 2 February 1970 at his home in Penrhyndeudraeth. His body was cremated in Colwyn Bay on 5 February 1970. In accordance with his will, there was no religious ceremony; his ashes were scattered over the Welsh mountains later that year. He left an estate valued at £69,423 (£1.09 million or US$1.4 million in 2018 money).^[173] In 1980 a memorial to Russell was commissioned by a committee including the philosopher A. J. Ayer. It consists of a bust of Russell in Red Lion Square in London sculpted by Marcelle Quinton.^[174]

Lady Katharine Jane Tait, Russell's daughter, founded the Bertrand Russell Society in 1974 to preserve and understand his work. It publishes a newsletter, holds meetings and awards prizes for scholarship.^[175] She also authored several essays about her father; as well as a book, My Father, Bertrand Russell, which was published in 1975.^[176]

Russell held throughout his life the following styles and honours:

Russell is generally credited with being one of the founders of analytic philosophy. He was deeply impressed by Gottfried Leibniz (1646–1716), and wrote on every major area of philosophy except aesthetics. He was particularly prolific in the field of metaphysics, logic and the philosophy of mathematics, the philosophy of language, ethics and epistemology. When Brand Blanshard asked Russell why he did not write on aesthetics, Russell replied that he did not know anything about it, though he hastened to add "but that is not a very good excuse, for my friends tell me it has not deterred me from writing on other subjects".^[177]

On ethics, Russell considered himself a utilitarian.^[178]

For the advancement of science and protection of the right to freedom of expression, Russell advocated The Will to Doubt, the recognition that all human knowledge is at most a best guess, that one should always remember:

Russell described himself in 1947 as an agnostic, saying: "Therefore, in regard to the Olympic gods, speaking to a purely philosophical audience, I would say that I am an Agnostic. But speaking popularly, I think that all of us would say in regard to those gods that we were Atheists. In regard to the Christian God, I should, I think, take exactly the same line."^[179] For most of his adult life, Russell maintained religion to be little more than superstition and, despite any positive effects, largely harmful to people. He believed that religion and the religious outlook serve to impede knowledge and foster fear and dependency, and to be responsible for much of our world's wars, oppression, and misery. He was a member of the Advisory Council of the British Humanist Association and President of Cardiff Humanists until his death.^[180]

Political and social activism occupied much of Russell's time for most of his life. Russell remained politically active almost to the end of his life, writing to and exhorting world leaders and lending his name to various causes.

Russell argued for a "scientific society", where war would be abolished, population growth would be limited, and prosperity would be shared.^[181] He suggested the establishment of a "single supreme world government" able to enforce peace,^[182] claiming that "the only thing that will redeem mankind is co-operation".^[183]

Russell was an active supporter of the Homosexual Law Reform Society, being one of the signatories of A. E. Dyson's 1958 letter to The Times calling for a change in the law regarding male homosexual practices, which were partly legalised in 1967, when Russell was still alive.^[184]

In "Reflections on My Eightieth Birthday" ("Postscript" in his Autobiography), Russell wrote: "I have lived in the pursuit of a vision, both personal and social. Personal: to care for what is noble, for what is beautiful, for what is gentle; to allow moments of insight to give wisdom at more mundane times. Social: to see in imagination the society that is to be created, where individuals grow freely, and where hate and greed and envy die because there is nothing to nourish them. These things I believe, and the world, for all its horrors, has left me unshaken".^[185]

Below is a selected bibliography of Russell's books in English, sorted by year of first publication:

Russell was the author of more than sixty books and over two thousand articles.^[214][215] Additionally, he wrote many pamphlets, introductions, and letters to the editor. One pamphlet titled, 'I Appeal unto Caesar': The Case of the Conscientious Objectors, ghostwritten for Margaret Hobhouse, the mother of imprisoned peace activist Stephen Hobhouse, allegedly helped secure the release from prison of hundreds of conscientious objectors.^[216]

His works can be found in anthologies and collections, including The Collected Papers of Bertrand Russell, which McMaster University began publishing in 1983. By March 2017 this collection of his shorter and previously unpublished works included 18 volumes,^[217] and several more are in progress. A bibliography in three additional volumes catalogues his publications. The Russell Archives held by McMaster's William Ready Division of Archives and Research Collections possess over 40,000 of his letters.^[218]