It makes no good to point the failures out without showing at the same time the remedy to address them.

Knowing is not enough; we must apply. Willing is not enough; we must do.

The artist has a twofold relation to nature; he is at once her master and her slave.

I have heard myself accused of being an opponent, an enemy of mathematics, which no one can value more highly than I, for it accomplishes the very thing whose achievement has been denied me.

No one as ever completed their apprenticeship.

All that is alive tends toward color, individuality, specificity, effectiveness and opacity. All that is done with life inclines toward knowledge, abstraction, generality transfiguration and transparency.

If youth is a fault, it is one that one gets rid of soon enough.