Lucas

“How do I know," she said at last, "that you are what you seem to be?"
"You don't," Said he. "I don't know what I seem, to you.”
― Ursula K. Le Guin, The Tombs of Atuan

“There is one rule, above all others, for being a man. Whatever comes, face it on your feet.”
― Robert Jordan, The Great Hunt

“Having intelligence, we must not act in ignorance. Having choice, we must not act without responsibility.”
― Ursula K. Le Guin, The Farthest Shore

“You will die. You will not live forever. Nor will any man nor any thing. Nothing is immortal. But only to us is it given to know that we must die. And that is a great gift: the gift of selfhood. For we have only what we know we must lose, what we are willing to lose... That selfhood which is our torment, and our treasure, and our humanity, does not endure. It changes; it is gone, a wave on the sea. Would you have the sea grow still and the tides cease, to save one wave, to save yourself?”
― Ursula K. Le Guin, The Farthest Shore