A person hears only what they understand.

What matters in art is not thinking but making.

I am the Spirit that denies.

Should I not be proud, when for twenty years I have had to admit to myself that the great Newton and all the mathematicians and noble calculators along with him were involved in a decisive error with respect to the doctrine of color, and that I among millions was the only one who knew what was right in this great subject of nature?

The march of intellect, which licks all the world into shape, has even reached the devil.

Everything is both simpler than we can imagine and more entangled than we can conceive.

A man is not little when he finds it difficult to cope with circumstances, but when circumstances overmaster him.