"If you are to be kept right, you must possess either good friends or red-hot enemies. The one will warn you, the other will expose you."

“Boasting, like gilded armour, is very different inside from outside.”

“He used to reason as follows: 'Everything belongs to the gods; the wise are friends of the gods; friends hold all things in common; ergo, everything belongs to the wise.'”

“He was seized and dragged off to King Philip, and being asked who he was, replied, "A spy upon your insatiable greed.”

“Perdiccas threatened to put him to death unless he came to him, "That's nothing wonderful," Diogenes said, "for a beetle or a tarantula would do the same.”

“Thieves and fighters do not come from eaters of barley-bread; but informers and tyrants come from meat-eaters.”

“When scolded for masturbating in public, he said "I wish it were as easy to banish hunger by rubbing my belly.”