evidence: Bertrand Arthur William Russell (b.1872 - d.1970) was a British philosopher, logician, essayist, and social critic, best known for his work in mathematical logic and analytic philosophy. His most influential contributions include his defense of logicism (the view that mathematics is in some important sense reducible to logic), and his theories of definite descriptions and logical atomism. Along with G.E. Moore, Russell is generally recognized as one of the founders of analytic philosophy. Along with Kurt Gödel, he is also regularly credited with being one of the two most important logicians of the twentieth century. [...] In 1954 he delivered his famous "Man's Peril" broadcast on the BBC, condemning the Bikini H-bomb tests. A year later, together with Albert Einstein, he released the Russell-Einstein Manifesto calling for the curtailment of nuclear weapons. In 1957 he was a prime organizer of the first Pugwash Conference, which brought together a large number of scientists concerned about the nuclear issue. He became the founding president of the Campaign for Nuclear Disarmament in 1958 and was once again imprisoned, this time in connection with anti-nuclear protests in 1961. The media coverage surrounding his conviction only served to enhance Russell's reputation and to further inspire the many idealistic youths who were sympathetic to his anti-war and anti-nuclear protests. [...] - Vellacott, Jo (1980) Bertrand Russell and the Pacifists in the First World War, Brighton, Sussex: Harvester Press.