“You don't know what you don't know.”

“what you don't know, you don't miss”

“The definition of the word truth is that, you know what you know and what you don't know.”

“What you understand, you know; and what you know, you don't forget.”

“It's not what you don't know that kills you but what you know that isn't so.”

“What you don't have you don't need it now
What you don't know you can feel it somehow”

“Write about what you don't know about what you know.”

“When you're white you don't know what it's like to be living in a ghetto, you don't know what it's like to be poor.”

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

“Knowing was a temptation. What you don't know won't tempt you.”