David Lewis (Stanford Encyclopedia of Philosophy)First published Thu Jul 23, 2009; substantive revision Thu Nov 18, 2021 David Lewis (1941–2001) was one of the most important philosophers of the 20th Century. He made significant contributions to philosophy of language, philosophy of mathematics, philosophy of science, decision theory, epistemology, meta-ethics and aesthetics. In most of these fields he is essential reading; in many of them he is
