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

I do not believe...I know.

Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not.

We should not pretend to understand the world only by the intellect. The judgement of the intellect is only part of the truth.

The collective unconscious consists of the sum of the instincts and their correlates, the archetypes. Just as everybody possesses instincts, so he also possesses a stock of archetypal images.

Men are apt to prefer a prosperous error before an afflicted truth