Socrates: the philosopher whose questioning gave birth to the ideas of Western thought, and whose execution marked the end of the Athenian Golden Age. Yet despite his pre-eminence among the great thinkers of history, little of his life story is known. What we know tends to begin in his middle age and end with his trial and death. Our conception of Socrates has relied upon Plato and Xenophon – men who met him when he was in his 50s and a well-known figure in war-torn Athens. There is mystery at the heart of Socrates’ story: what turned the young Socrates into a philosopher? What drove him to pursue with such persistence, at the cost of social acceptance and ultimately of his life, a whole new way of thinking about the meaning of existence?