  However, there need be no tension between the Zenonian and the Socratic roots of Diodorus’s philosophy. Indeed, in Plato’s Parmenides (135c–d) a very young and still developing Socrates is advised by Parmenides to exercise his dialectical skills according to the model set by Zeno—a method which, perhaps significantly for Diodorus, involves systematically examining the consequences of a ‘hypothesis’.