"It is difficulties that show what men are."

"Protect what belongs to you at all costs; don't desire what belongs to another."

"When you are going to meet with any person, and particularly one of those who are considered to be great, represent to yourself what Socrates or Zeno would have done in such a case."

"How long are you going to wait before you demand the best for yourself?"

"If, however, he has his victim's weakness to exploit, then his efforts are worth his while."