Bertrand Arthur William Russell, 3rd Earl Russell, OM, FRS, (18 May 1872 – 2 February 1970), was a British philosopher, logician, mathematician, advocate for social reform, and pacifist.
A prolific writer, he was also a populariser of philosophy and a commentator on a large variety of topics, ranging from very serious issues to those much less so. Continuing a family tradition in political affairs, he was a prominent anti-war activist, championing free trade between nations and anti-imperialism.
Russell was born at the height of Britain's economic and political ascendancy. He died of influenza nearly a century later, at a time when the British Empire had all but vanished, its power dissipated by two world wars and the end of the imperial system. As one of the world's best-known intellectuals, Russell's voice carried great moral authority, even into his death. Among his political activities, Russell was a vigorous proponent of nuclear disarmament and an outspoken critic of the American military intervention in Vietnam.
In 1950, Russell was made a Nobel Laureate in Literature, "in recognition of his varied and significant writings in which he champions humanitarian ideals and freedom of thought".