"The dream is the fulfilling of a wish."

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

"The interpretation of dreams is the via regia to the unconscious."

"The neurotic is a person who has discovered the meaning of life, but not the purpose."

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