The human mind has first to construct forms, independently, before we can find them in things.

I have remained a simple fellow who asks nothing of the world; only my youth is gone - the enchanting youth that forever walks on air.

Our world faces a crisis as yet unperceived by those possessing power to make great decisions for good or evil. The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.

Without deep reflection one knows from daily life that one exists for other people.

The only real valuable thing is intuition.

Science is the process of making obviously erroneous ideas less obviously erroneous.

It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing...