And the marvellous thing in Plato of Socrates, when he'd been told by the Delphic Oracle that he was the wisest of men, he started off like a sort of good poperian scientist trying to falsify this and he went round finding people wiser than himself and he went to various people and they weren't any wiser, and then he thought ‘Oh, the poets, they're marvellous people, they know so much’, and he went to them and he found that the hadn't a clue what they'd written.