I must also have a dark side if I am to be whole.

Nothing is possible without love.

Not nature, but the "genius of mankind," has knotted the hangman's noose with which it can execute itself at any moment.

To become acquainted with oneself is a terrible shock.

Whenever we give up, leave behind, and forget too much, there is always the danger that the things we have neglected will return with added force

The heaping together of paintings by Old Masters in museums is a catastrophe; likewise, a collection of a hundred Great Brains makes one big fathead.

Neurosis is an inner cleavage-the state of being at war with oneself.