Diogenes Laertius. About the life, teachings and sayings of famous philosophers (№ 281024)

And he say, asked Aesop what Zeus and Aesop said, "belittles the High, low uplifts". On the question of what distinguishes people with education from people without education, he said, "feed hope". And the question that hard - "to Keep secret; not to abuse leisure time; to endure insult".