In his Cratylus, Plato gives the etymology of Athena's name, the goddess of wisdom, from Atheonóa (Ἀθεονόα) meaning "god's (theos) mind (nous)". In his Phaedo, Plato's teacher Socrates is made to say just before dying that his discovery of Anaxagoras' concept of a cosmic nous as the cause of the order of things, was an important turning point for him. But he also expressed disagreement with Anaxagoras' understanding of the implications of his own doctrine, because of Anaxagoras' materialist understanding of causation.