The wine of youth does not always clear with advancing years; sometimes it grows turbid.

Science is not ... a perfect instrument, but it is a superb and invaluable tool that works harm only when taken as an end in itself.

A true symbol appears only when there is a need to express what thought cannot think or what is only divined or felt.

We all must do what Christ did. We must make our experiment. We must make mistakes. We must live out our own version of life. And there will be error. If you avoid error you do not live.

I had to make a confession of faith in stone. That was the beginning of the tower, the house I built for myself at Bollingen.

Life is something that has to be lived and not talked about.

The brain is viewed as an appendage of the genital glands.