Apollonius of Tyana

“A man must fortify himself and understand that a wise man who yields to laziness or anger or passion or love of drink, or who commits any other action prompted by impulse and inopportune, will probably find his fault condoned; but if he stoops to greed, he will not be pardoned, but render himself odious as a combination of all vices at once.”

“I feel friendship towards philosophers, but towards sophists, teachers of literature, or any other such kind of godforsaken people, I neither feel friendship now, nor may I ever do so in the future.”