“The more you know, the more you know you don't know and the more you know that you don't know.”

“The more you learn, the more you know that you know nothing.”

“Oh, I don't know, you know, don't you know?”

“You know more than you think you know, just as you know less than you want to know.”

“I love you Clary. More then I ever-- God. More than i probably should. You know that, don't you?”

“You don't know what you don't know.”

“If you do not know where you come from, then you don't know where you are, and if you don't know where you are, then you don't know where you're going. And if you don't know where you're going, you're probably going wrong.”

“Why you gotta act like you know, if you don't know?
It's okay if you don't know everything.”

“In my experience, the more you know of the gods, the more you know what you cannot understand.”

“You [a disciple], shall I teach you about knowledge? What you know, you know, what you don't know, you don't know. This is true wisdom.”