Isaac

“Do nothing because it is righteous or praiseworthy or noble to do so; do nothing because it seems good to do so; do only that which you must do and which you cannot do in any other way.”
― Ursula K. LeGuin, The Farthest Shore

“I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend.”
― J.R.R. Tolkien, The Two Towers