The Scepticsis the first comprehensive, up-to-date treatment of Greek scepticism, from the beginnings of epistemology with Xenophanes, to the final full development of Pyrrhonism as presented in the work of Sextus Empiricus. This clear and rigorous analysis presents the arguments of the Greek sceptical thinkers in their historical context, tracing the development of scepticism in Greek thought from 500 B.C. to 200 A.D.