 What was needed, then, was a sophisticated refutation of Aristotle from a Platonist point of view. In order to give a flavor of Syrianus’ defense of Platonism, both early and late, it may suffice to survey his responses to two points raised by Aristotle’s celebrated criticism of Platonic forms: (1) the Aristotelian view that objects of mathematics are arrived at by abstraction; and (2) the so-called “Third Man” argument.