"The tendency to aggression is an innate, independent, instinctual disposition in man... it constitutes the most powerful obstacle to culture."

"The mind is like an iceberg, it floats with one-seventh of its bulk above water."

"Illusions commend themselves to us because they save us pain and enable us to enjoy pleasure instead. We must therefore accept it without complaint when they sometimes collide with a bit of reality an…"

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

"There are no accidents in the unconscious."