 Together with  G.E. Moore,  Russell is generally recognized as one of the founders of modern analytic philosophy. His famous  paradox,  theory of types and work with  A.N. Whitehead  on  Principia Mathematica  invigorated the study of logic throughout the twentieth century (Schilpp 1944, xiii; Wilczek 2010, 74). In the public mind, he was  famous as much for his evangelical atheism as for his contributions to technical philosophy.