If you pursue good with labor, the labor passes away but the good remains; if you pursue evil with pleasure, the pleasure passes away and the evil remains. ↗
When one ceases from conflict, whether because he has won, because he has lost, or because he cares no more for the game, the virtue passes out of him. ↗
The only virtue a character needs to possess between hardcovers, even if he bears a real person's name, is vitality: if he comes to life in our imaginations, he passes the test. ↗