“It does not take much strength to do things, but it requires a great deal of strength to decide what to do.”

“Strength does not come from winning. Your struggles develop your strengths. When you go through hardships and decide not to surrender, that is strength.”

“You put the Set animal in your locker? Do you know how much strength that requires?”
“Yeah,” I said. “I was there.”

“Do you really think, Arthur, that it is weakness that yields to temptation? I tell you that there are terrible temptations that it requires strength, strength and courage, to yield to.”

“But that's what you're doing, isn't it? You're part of the fight just as much as the Shadowhunters on the ship—and I know you can take some of my strength, I've heard of warlocks doing that—so I'm offering. Take it. It's yours.”

“The proud person always wants to do the right thing, the great thing. But because he wants to do it in his own strength, he is fighting not with man, but with God.”

“Real strength never impairs beauty or harmony, but it often bestows it, and in everything imposingly beautiful, strength has much to do with the magic.”

“I am too tired, I must try to rest and sleep, otherwise I am lost in every respect. What an effort to keep alive! Erecting a monument does not require an expenditure of so much strength.”

“Make sure you are doing what God wants you to do—then do it with all your strength.”

“It requires strength of character to act upon one's ideas; it requires no less strength of character to resist being seduced by them.”