Without playing with fantasy, no creative work has yet come into being.

That which we do not confront in ourselves we will meet as fate.

In the second half of life the necessity is imposed of recognizing no longer the validity of our former ideals but of their contraries. Of perceiving the error in what was previously our conviction, of sensing the untruth in what was our truth, and of weighing the degree of opposition, and even of hostility, in what we took to be love.

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

I could not say I believe. I know! I have had the experience of being gripped by something that is stronger than myself, something that people call God.

Our intellect has created a new world that dominates nature, and has populated it with monstrous machines.

One cannot live without inconsistency.