Opal

“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”
― Sun Tzu, The Art of War

“Don’t you understand? When you’re standing on their side, you’re the bizarre genius, the miraculous hero, the force of the rebellion, the flower that blooms alone. But the second your voice differs from theirs, you’ve lost your mind, you’ve ignored morality, you’ve walked the crooked path.”
― 墨香铜臭, 魔道祖师 [Mó Dào Zǔ Shī]

“[...] our job is not to seek others whose wisdom will put the greatness into us, but rather to seek those who will help us get our greatness out.”
― Richard Montañez

“A 'why' is a dangerous thing... It challenges old, comfortable ways, forces people to think about that they do instead of just mindlessly doing it. (Haplo)

...

I think the danger is not so much in asking the 'why' as in believing you have come up with the only answer. (Alfred)”
― Margaret Weis & Tracy Hickman, Dragon Wing