I do not think our successes can compete with those of Lourdes. There are so many more people who believe in the miracles of the Blessed Virgin than in the existence of the unconscious.

In mourning it is the world which has become poor and empty; in melancholia it is the ego itself.

Thinking in pictures is, therefore, only a very incomplete form of becoming conscious. In some way, too, it stands nearer to unconscious processes than does thinking in words, and it is unquestionably older than the latter both ontogenetically and phylogenetically.

From error to error one discovers the entire truth.

The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.

Only the real, rare, true scientific minds can endure doubt, which is attached to all our knowledge.

The madman is a dreamer awake