Do you want to know what I most regret about my youth? That I didn't dream more boldly and demand of myself more impossible things; for all one does in maturity is to carve in granite or porphyry the soap bubble one blew in youth! Oh to have dreamed harder!

Because of their origin and purpose, the meanings of art are of a different order from the operational meanings of science and technics: they relate, not to external means and consequences, but to internal transformations, and unless it produce these internal transformations the work of art is either perfunctory or dead.

In vulgar usage, progress has come to mean limitless movement in space and time, accompanied, necessarily, by an equally limitless command of energy: culminating in limitless destruction.

To the extent that the scientist's capacity for pursuing the truth depends upon costly apparatus, institutional collaboration and heavy capital investment by government or industry he is no longer his own master.

We have lost faith in the formal powers of the mind, not, as some suppose, because our universe is too difficult to grasp, but because we lack the inner principle of order.

It was Stieglitz's endeavor... to translate the unseen world of tactile values as they develop between lovers not merely into the sexual act but the entire relation of two personalities - to translate this world of blind touch into sight.

A certain amount of opposition is a great help to a man. Kites rise against, not with, the wind.