Your vision will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.

Anyone who wants to know the human psyche will learn next to nothing from experimental psychology. He would be better advised to abandon exact science, put away his scholar's gown, bid farewell to his study, and wander with human heart through the world.

Instinct is like Nature herself - prodigiously conservative, and yet transcending her own historical conditions in her acts of creation.

The dream arises from a part of the mind unknown to us, but none the less important, and is concerned with the desires for the approaching day.

The man of today, who resembles more or less the collective ideal, has made his heart into a den of murderers, as can easily be proved by the analysis of his unconscious, even though he himself is not in the least disturbed by it.

The upheaval of our world and the upheaval of our consciousness are one and the same.

Nature does not deceive or conceal, but reveals.