One of Socrates' Athenian disciples in his youth, Xenophon (c. 498-354 bc) fought as a mercenary commander in Cyrus the Younger's campaign to seize the Persian throne, and later wrote a wide range of works on history, politics and philosophy. These six treatises offer his informed insights into the nature of leadership. In the dialogue between the poet Simonides and Hiero, tyrant of Syracuse, Xenophon provides a consummate consideration of the burdens of being an absolute dictator and the superior happiness of the private man. Elsewhere, his biography of King Agesilaus II of Sparta depicts the author's patron as a model of piety, justice, courage and wisdom, while other texts consider the essential qualities of the cavalry commander, analyse the skills of the horseman and the hunter, and advance a bold economic plan for democratic Athens.

Xenophon of Athens was a Greek poet, historian, soldier and philosopher, living at a time of momentous events in Ancient Greek history. He wrote about the philosophy of Socrates, the Peloponnesian War between Athens and Sparta, and the Persian expedition that formed the basis of his most famous work, Anabasis. In addition to his own works, he influenced the account of the Peloponnesian War written by the famous Greek historian Thucydides. Although he was recognized as a great writer and poet in his lifetime, Xenophon's involvement with Spartan politics and fighting led to his exile from Athens, and his association with Socrates probably did not help. His short treatise on Sparta's government is considered one of the first examples of political philosophy.

On Tyranny is Leo Strauss’s classic reading of Xenophon’s dialogue Hiero, or Tyrannicus, in which the tyrant Hiero and the poet Simonides discuss the advantages and disadvantages of exercising tyranny. Included are a translation of the dialogue from its original Greek, a critique of Strauss’s commentary by the French philosopher Alexandre Kojève, and the complete correspondence between the two. This revised and expanded edition introduces important corrections throughout and expands Strauss’s restatement of his position in light of Kojève’s commentary to bring it into conformity with the text as it was originally published in France.