The Apology of Socrates, written by Plato, is a Socratic dialogue of the speech of legal self-defence which Socrates spoke at his trial for impiety and corruption in 399 BC. Specifically, the Apology of Socrates is a defense against the charges of "corrupting the youth" and "not believing in the gods in whom the city believes, but in other daimonia that are novel" to Athens. (Wikipedia, CC BY-SA 4.0)