“Everywhere I go I find a poet has been there before me.”

“America is the most grandiose experiment the world has seen, but, I am afraid, it is not going to be a success.”

“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.”

“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?”

“Poets are masters of us ordinary men, in knowledge of the mind,because they drink at streams which we have not yet made accessible to science.”

“Here libido and ego-interest share the same fate and have once more become indistinguishable from each other. The familiar egoism of the sick person covers them both. We find it so natural because we are certain that in the same situation we should behave in just the same way. The way in which the readiness to love, however great, is banished by bodily ailments, and suddenly replaced by complete indifference, is a theme which has been sufficiently exploited by comic writers.”

“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.”