Nobody can fall so low unless he has a great depth. If such a thing can happen to a man, it challenges his best and highest on the other side; that is to say, this depth corresponds to a potential height, and the blackest darkness to a hidden light.

We should not pretend to understand the world only by the intellect; we apprehend it just as much by feeling. Therefore, the judgment of the intellect is, at best, only the half of truth, and must, if it be honest, also come to an understanding of its inadequacy.

If you are unhappy, you are too high up in your mind.

We want to have certainties and no doubts- results and no experiments- without even seeing that certainties can arise only through doubt and results only thorough experiment.

Plato's world of ideas is beautiful.

Every human life contains a potential, if that potential is not fulfilled, then that life was wasted.

Here and there it happened in my practice that a patient grew beyond himself because of unknown potentialities, and this became an experience of prime importance to me. I had learned in the meanwhile that the greatest and most important problems of life are all in a certain sense insoluble. They must be so because they express the necessary polarity inherent in every self-regulating system. They can never be solved, but only outgrown.