From Plato’s Theaetetus, where Socrates speaks to the young mathematician after Theodorus has praised him. He says that “wonder is the feeling of a philosopher, and philosophy begins in wonder”, and cites the genealogy of Iris as the child of Thaumas. The sentence is the best-known ancient statement of the origin of philosophy.
Read in contextI see, my dear Theaetetus, that Theodorus had a true insight into your nature when he said that you were a philosopher, for wonder is the feeling of a philosopher, and philosophy begins in wonder. He was not a bad genealogist who said that Iris (the messenger of heaven) is the child of Thaumas (wonder).
