 As part of the "Hellenica", the historian Xenophon describes the reign over Athens of the Thirty Tyrants, a ruthless oligarchy under the control of Sparta, Athens' Hellenic rival.Xenophon lists some of the atrocities committed by the Thirty, including "when Leon of Salamis, a man of high and well-deserved reputation, was put to death, though he had not committed the shadow of a crime" ("Hellenica" Book II).In the "Apology", Plato's Socrates argues that he fears committing injustice more than he fears death.