In the last analysis the entire field of psychology may reduce to biological electrochemistry.

My psychoanalysis has equipped you with the equivalent of a train ticket to recovery. It is now your decision whether or not you choose to make full use of it.

Long ago man formed an ideal conception of omnipotence and omniscience which he embodied in his gods. Whatever seemed unattainable to his desires - or forbidden to him - he attributed to these gods... Now he has himself approached very near to realizing this ideal, he has nearly become a god himself.

I had thought about cocaine in a kind of day-dream.

It is impossible to overlook the extent to which civilization is built upon a renunciation of instinct.

It is a mistake to believe that science consists in nothing but conclusively proved propositions, and it is unjust to demand that it should. It is a demand made by those who feel a craving for authority in some form to replace the religious catechism by something else, even a scientific one.

The idea of life having a purpose stands and falls with the religious system.