 The view according to which the wise person assents and forms opinions appealed to those convinced by the Academy’s arguments that, though certainty is unobtainable, well founded probabilities are within our grasp, among which is this view itself. Someone who thinks this is likely to see little point in keeping a special kind of approval, assent, in reserve for a kind of certainty which he thinks is neither needed nor possible, though he cannot be certain of this any more than he can be certain of anything else. This view was, it seems, favored by Philo of Larissa among others (cf. Brittain, 2001), and it gave rise to a form of probabilism, as a positively endorsed theory of knowledge, which is one of the New Academy’s legacies. The other view, which favors withholding assent while still relying on probability, appealed to those who were attracted, as Zeno and Arcesilaus had been, to the ideal of certain knowledge, for which it preserves assent while permitting a weaker form of approval. This is the classical skeptical stance that was the New Academy’s other legacy, which was defended by Clitomachus, and it also influenced the other main ancient school of skepticism, the Pyrrhonists. It is noteworthy that the more radical forms of skepticism defended by Clitomachus and the Pyrhonists were less firmly attached to the skeptical proposition that nothing can be known than moderate skeptics, who assented vehemently to it (Acad. 2. 148).