Arcesilaus of Pitane (c.315–242 B.C.), Greek Skeptic philosopher, founder of the Middle Academy. Influenced by Socratic elenchus, he claimed that, unlike Socrates, he was not even certain that he was certain of nothing. He shows the influence of Pyrrho in attacking the Stoic doctrine that the subjective certainty of the wise is the criterion of truth. At the theoretical level he advocated epoche, suspension of rational judgment; at the practical, he argued that eulogon, probability, can justify action – an early version of coherentism. His ethical views were not extreme; he held, e.g., that one should attend to one’s own life rather than external objects. Though he wrote nothing except verse, he led the Academy into two hundred years of Skepticism. R.C.