The word 'belief' is a difficult thing for me. I don't believe. I must have a reason for a certain hypothesis. Either I know a thing, and then I know it - I don't need to believe it.

Language, in its origin and essence, is simply a system of signs or symbols that denote real occurrences or their echo in the human soul.

Active imagination requires a state of reverie, half-way between sleep and waking.

To the critical intelligence, nothing is left of absolute reality.

Like the sea itself, the unconscious yields an endless and self-replenishing abundance of creatures, a wealth beyond our fathoming.

This whole creation is essentially subjective, and the dream is the theater where the dreamer is at once: scene, actor, prompter, stage manager, author, audience, and critic.

Knowledge rests not upon truth alone, but upon error also.