The dispute between Schlick and Neurath over het foundations of empirical knowledge illustrates the difficulties m trymg to draw epistemological conclusions from a verificationist theory of meaning. It also shows how assummg the general correctness of science does not automatically avoid, or provide an easy answer to, skepticism. But while neither Schlick nor Neurath arrived at a satisfactory account of empüical knowledge, there are promising hmts of a better theory m their writmgs. Following up these hints, and drawing on further (...) ideas m Hempel, Carnap and particularly Quine, I suggest the direction I think a naturalistic epistemology should take. (shrink)