“Woe to you, my Princess, when I come. I will kiss you quite red and feed you till you are plump. And if you are forward, you shall see who is the stronger, a gentle little girl who doesn't eat enough, or a big wild man who has cocaine in his body. -- A love letter from Freud to his fiancée.”

“And it is only after seeing man as his unconscious, revealed by his dreams, presents him to us that we shall understand him fully. For as Freud said to Putnam: "We are what we are because we have been what we have been.”

“Thus I must contradict you when you go on to argue that men are completely unable to do without the consolation of the religious illusion, that without it they could not bear the troubles of life and the cruelties of reality. That is true, certainly, of the men into whom you have instilled the sweet -- or bitter-sweet -- poison from childhood onwards. But what of the other men, who have been sensibly brought up? Perhaps those who do not suffer from the neurosis will need no intoxicant to deaden it. They will, it is true, find themselves in a difficult situation. They will have to admit to themselves the full extent of their helplessness and their insignificance in the machinery of the universe; they can no longer be the centre of creation, no longer the object of tender care on the part of a beneficent Providence. They will be in the same position as a child who has left the parental house where he was so warm and comfortable. But surely infantilism is destined to be surmounted. Men cannot remain children for ever; they must in the end go out into 'hostile life'. We may call this 'education to reality. Need I confess to you that the whole purpose of my book is to point out the necessity for this forward step?”

“The freeing of an individual, as he grows up, from the authority of his parents is one of the most necessary though one of the most painful results brought about by the course of his development. It is quite essential that that liberation should occur and it may be presumed that it has been to some extent achieved by everyone who has reached a normal state. Indeed, the whole progress of society rests upon the opposition between successive generations. On the other hand, there is a class of neurotics whose condition is recognizably determined by their having failed in this task.”

“The element of truth behind all this, which people are so ready to disavow, is that men are not gentle creatures who want to be loved, and who at the most can defend themselves if they are attacked; they are, on the contrary, creatures among whose instinctual endowments is to be reckoned a powerful share of aggressiveness.”

“The time comes when each of us has to give up as illusions the expectations which, in his youth, he pinned upon his fellow-men, and when he may learn how much difficulty and pain has been added to his life by their ill-will.”

“I was making frequent use of cocaine at that time ... I had been the first to recommend the use of cocaine, in 1885, and this recommendation had brought serious reproaches down on me.”