The wars fanned the wings of science, and science brought to mankind a thousand blessings, a thousand problems and a thousand perils.

Thoroughly conscious ignorance is the prelude to every real advance in science.

Freedom of thought is best promoted by the gradual illumination of men's minds which follows from the advance of science.

The whole of science is nothing more than a refinement of everyday thinking.

The most beautiful experience we can have is the mysterious. It is the source of all true art and science.

I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.