It might be said of psychoanalysis that if you give it your little finger it will soon have your whole hand.

Beauty has no obvious use; nor is there any clear cultural necessity for it. Yet civilization could not do without it.

Where they love they do not desire and where they desire they do not love.

The individual does actually carry on a double existence: one designed to serve his own purposes and another as a link in a chain, in which he serves against, or at any rate without, any volition of his own.

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.

A strong experience in the present awakens in the creative writer a memory of an earlier experience (usually belonging to his childhood) from which there now proceeds a wish which finds its fulfilment in the creative work.

Love is a state of temporary psychosis.