The Hipparchus is a dialogue attributed to the classical Greek philosopher and writer Plato. It is now widely agreed that Plato is not the author of this work, based on stylistic and other considerations. As the name implies, the subject of this dialogue is the Athenian tyrant Hipparchus. Plato Plato (Greek: Πλάτων Plátōn) (ca. ... Hipparchus was one of the sons of Pisistratus who became tyrant of Athens when Pisistratus died in 527 BC. Hipparchus ruled jointly with his brother Hippias. ...