Socrates Quotes
One should never do wrong in return, nor mistreat any man, no matter how one has been mistreated by him.
Plato. Crito. Translated by G.M.A. Grube, Hackett Publishing, 1997, p. 50.
This appears to be the first formal codification of the Golden Rule into law.
Socrates (/ˈsɒkrətiːz/; Ancient Greek: Σωκράτης Sōkrátēs [sɔːkrátɛːs]; c. 470 – 399 BC) was a Greek philosopher from Athens who is credited as one of the founders of Western philosophy, and as being the first moral philosopher of the Western ethical tradition of thought. An enigmatic figure, he authored no texts, and is known chiefly through the accounts of classical writers composing after his lifetime, particularly his students Plato and Xenophon. Other sources include the contemporaneous Antisthenes, Aristippus, and Aeschines of Sphettos. Aristophanes, a playwright, is the main contemporary author to have written plays mentioning Socrates during Socrates' lifetime, although a fragment of Ion of Chios' Travel Journal provides important information about Socrates' youth.