But the less a man knows about the past and the present the more insecure must prove to be his judgment of the future.

The great question that has never been answered, and which I have not yet been able to answer, despite my thirty years of research into the feminine soul, is 'What does a woman want?'

A woman should soften but not weaken a man.

The behavior of a human being in sexual matters is often a prototype for the whole of his other modes of reaction in life.

It is a predisposition of human nature to consider an unpleasant idea untrue, and then it is easy to find arguments against it.

A certain degree of neurosis is of inestimable value as a drive, especially to a psychologist.

Plaque was placed on 6 May 1977 at Bellevue (a house on the slopes of the Wienerwald) where the Freud family spent their summers.