Every form of addiction is bad, no matter whether the narcotic be alcohol or morphine or idealism.

The primary cause of unhappiness in the world today is... lack of faith.

The underlying, primary psychic reality is so inconceivably complex that it can be grasped only at the farthest reach of intuition, and then but very dimly. That is why it needs symbols.

I am astonished, disappointed, pleased with myself. I am distressed, depressed, rapturous. I am all these things at once and cannot add up the sum.

The psychotherapist learns little or nothing from his successes. They mainly confirm him in his mistakes, while his failures, on the other hand, are priceless experiences in that they not only open up the way to a deeper truth, but force him to change his views and methods.

A man who has not passed through the inferno of his passions has never overcome them.

Securities, certitudes and peace do not lead to discoveries.