Religion is the process of unconscious wish fulfillment, where, for certain people, if the process did not take place it would put them in self-danger of coming to mental harm, being unable to cope with the idea of a godless, purposeless life.

The primitive stages can always be re-established; the primitive mind is, in the fullest meaning of the word, imperishable.

Homosexuality is assuredly no advantage, but it is nothing to be ashamed of, no vice, no degradation, it cannot be classified as an illness.

Even if all parts of a problem seem to fit together like the pieces of a jigsaw puzzle, one has to remember that the probable need not necessarily be the truth and the truth not always probable.

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 ego is not master in its own house.

The world is no nursery.