Silence at the proper season is wisdom, and better than any speech. - Plutarch

So reason makes all sorts of life easy, and every change pleasant. Alexander wept when he heard from Anaxarchus that there was an infinite number of worlds, and his friends asking him if any accident had befallen him, he returns this answer: Do not you think it a matter worthy of lamentation, that, when there is such a vast multitude of them, we have not yet conquered one? But Crates with only his scrip and tattered cloak laughed out his life jocosely, as if he had been always at a festival.

Pyrrhus said, "If I should overcome the Romans in another fight, I were undone."

take care, in reading the writings of philosophers or hearing their speeches, that you do not attend to words more than things, nor get attracted more by what is difficult and curious than by what is serviceable and solid and useful.