After the execution of Socrates in 399 BC, a number of his followers wrote dialogues featuring him as the protagonist and, in so doing, transformed the great philosopher into a legendary figure. Xenophon's portrait is the only one other than Plato's to survive, and while it offers a very personal interpretation of Socratic thought, it also reveals much about the man and his philosophical views. In 'Socrates' Defence' Xenophon defends his mentor against...