 The following sections thus offer an interpretation of Philo’s philosophical development on the hypothesis that he held three distinct epistemological views, as proposed by the Radical Skepticism → Mitigated Skepticism → Fallibilism account above. It is worth stressing, however, that, given the uncertainties of our evidence, the exegetical and historical arguments above cannot be regarded as conclusive. The case is not closed (see, e.g., Glucker 2004 and Tarrant 2018).