(18-05-1872 / 02-02-1970) He was a man of almost unlimited intellectual curiosity. He studied mathematics, physics and human sciences at Cambridge. His theory of types, with which he gave answer to the serious crisis that crossed the set theory, opened a new field to the formal logic. In moral and social philosophy he addressed the contradictions between individual and society, freedom and order, progressivism and pessimism, and so on. His unbearable Christian activity made him imprisoned twice. Faced with the nuclear arms race and the violence presided the court that judged the war crimes of Vitenam. He was a professor at Cambridge and lecturer at universities and cultural centers throughout the world, and in 1950 he was awarded the Nobel Prize for Literature. They emphasize in their vast work Principia mathematica, Education and social order, Why I am not Christian, Foundations of philosophy, Unpopular essays, Nightmares of eminent people and Mysticism and logic among others. In 1989 Edhasa published The Best of Bertrand Russell and in 1991 his extensive Autobiography.