It is unreasonable to expect science to produce a system of ethics-ethics are a kind of highway code for traffic among mankind-and the fact that in physics atoms which were yesterday assumed to be square are now assumed to be round is exploited with unjustified tendentiousness by all who are hungry for faith; so long as physics extends our dominion over nature, these changes ought to be a matter of complete indifference to you.

If a man has been his mother's undisputed darling he retains throughout life the triumphant feeling, the confidence in success, which not seldom brings actual success along with it.

The only shame in masturbation is the shame of not doing it well.

The Irish are the one race for which psychoanalysis is of no use whatsoever... because they already live in a dream world.

Civilized people have exchanged some part of their chances of happiness for a measure of security.

The intention that man should be happy is not in the plan of Creation.

I cannot face the idea of life without work. What would one do when ideas failed or words refused to come? It is impossible not to shudder at the thought.