and Aims" in The Pursuit of Truth, Cambridge: Harvard University Press. Steup, Matthias, An Introduction to Contemporary Epistemology, Prentice-Hall, 1996. Stich, Stephen and Richard Nisbett (1980), "Justification and the Psychology of Human Reasoning," Philosophy of Science 47: 188–202. Stich, Stephen (1990) The Fragmentation of Reason, Cambridge, MA: MIT Press. Strawson, Peter (1952) Introduction to Logical Theory, New York: Wiley. van Cleve, James (1985) "Epistemic Supervenience and the Circle of Belief" Monist 68: 90–104. External links The Routledge Encyclopedia of Philosophy: Epistemology The Stanford Encyclopedia of Philosophy: Formative Epistemology The Penguin Dictionary of Philosophy Epistemological theories Naturalism (philosophy) Willard Van Orman Quine