Just one quote by Aeschylus
Aeschylus (Αἰσχύλος; c. 525/524 – c. 456/455 BCE) was an ancient Greek tragedian, and is often described as the father of tragedy. Academic knowledge of the genre begins with his work, and understanding of earlier Greek tragedy is largely based on inferences made from reading his surviving plays. According to Aristotle, he expanded the number of characters in the theatre and allowed conflict among them. Formerly, characters interacted only with the chorus. Only seven of his estimated seventy to ninety plays have survived.
It is a profitable thing, if one is wise, to seem foolish.
Κέρδιστον εὖ φρονοῦντα μὴ φρονεῖν δοκεῖν.
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The author info is from Wikipedia, licensed under the GNU Free Documentation License.
The original picture is by Capitoline Museums, Public domain, via Wikimedia Commons and may have been cropped and converted to greyscale.