In the Defence of Socrates, Plato seeks not only to clear his master’s name, but also to defend the whole Socratic way of life, and therefore philosophy itself. The Euthyphro, an inquiry into the nature of piety, probes the relationship between religion and morality. The Crito discusses the citizen’s obligation to the state, in the context of a life-ordeath issue confronting Socrates himself – whether or not to escape from prison.