Sigmund Freud — "The narcissism of minor differences."

"Unexpressed emotions will never die. They are buried alive and will come forth later in uglier ways."

"No one who has tasted the forbidden fruit of knowledge can ever again be satisfied with the primitive bliss of ignorance."

"Neurotics complain of their illness, but they make the most of it, and when it comes to taking it away from them, they will defend it like a lioness her cubs."

"Men are more moral than they think and far more immoral than they can imagine."

"The more the parents of a child are themselves involved in neurotic conflicts, the more likely it is that they will seek to resolve these conflicts through their child."