Virtue cannot dwell with wealth either in a city or in a house. - Diogenes of Sinope

Diogenes the cynic, seeing one of the so-called freedmen pluming himself, while many heartily congratulated him, marveled at the absence of reason and discernment. “A man might as well,” he said, “proclaim that one of his servants became a grammarian, a geometrician, or musician, when he has no idea whatever of the art.” For as the proclamation cannot make them men of knowledge, so neither can it make them free.

To one who asked what was the proper time for lunch, he said, "If a rich man, when you will; if a poor man, when you can."

When the slave auctioneer asked in what he was proficient, he replied, "In ruling people."