Abstract

This paper presents a critical review and discussion of three recent major theories of epistemic scepticism. Odegard and Rescher both agree that real knowledge entails certain beliefs. But they both fail to see how beliefs could be absolutely certain. Klein’s book, Certainty: A Refutationof Scepticism, presents the strongest possible view in favor of absolute certainty. I pay attention to its technical details and development by Klein. My conclusion is that Klein’s theory rests on some presupposed ideas that are either counterintuitive or then make the theory trivial: one’s certainty of truth becomes the same as the truth itself.