It is easy to see that the ego is that part of the id which has been modified by the direct influence of the external world.

The goal towards which the pleasure principle impels us - of becoming happy - is not attainable: yet we may not - nay, cannot - give up the efforts to come nearer to realization of it by some means or other.

Demons do not exist any more than gods do, being only the products of the psychic activity of man.

You can always make a lot of people love one another so long as there are a smaller number outside the group for them to kick.

The conscious mind may be compared to a fountain playing in the sun and falling back into the great subterranean pool of subconscious from which it rises.

A string of reproaches against other people leads one to suspect the existence of a string of self-reproaches with the same content.

After all, we did not invent symbolism; it is a universal age-old activity of the human imagination.