Bertrand Russell (1872-1970) was a British philosopher, logician, and social reformer. He was a founding figure in the analytic movement in philosophy along with Gottlob Frege, G.E. Moore and Ludwig Wittgenstein, and won the Nobel Prize for Literature in 1950. Russell’s contributions to logic, epistemology and the philosophy of mathematics established him as one of the foremost philosophers of the 20th century. He is also widely known as a campaigner for peace and for his popular writing on social, political, and moral subjects.