Bertrand Arthur William Russell (1872-1970) was a British philosopher, logician, essayist and social critic. He was best known for his work in mathematical logic and analytic philosophy. Together with G.E. Moore, Russell is generally recognized as one of the main founders of modern analytic philosophy. Together with Kurt Gödel, he is regularly credited with being one of the most important logicians of the twentieth century. Over the course of a long career, Russell also made contributions to a broad range of subjects, including the history of ideas, ethics, political and educational theory, and religious studies.