Abstract
Wittgenstein's Über Gewißheit shows his de facto commitment to the Three Condition Theory, according to which a knowledge-attribution implies belief, justification and truth, i.e., one can't be said to know that p unless (a) he believes that p; (b) he is in a position to justify p; and (c) 'p' is true. However, when it comes to tackling the puzzling infinite regress of justifications Wittgenstein's argument becomes entangled in an epistemological circle. It seems to oscillate between an unwelcome absolutism and a self-refuting relativism as far as epistemological matters are concerned.