What interests me most is whether God could have made the world differently.

Time is relative; its only worth depends upon what we do as it is passing.

Imagination is more important than knowledge. Imagination is the language of the soul. Pay attention to your imagination and you will discover all you need to be fulfilled.

Without the sense of fellowship with men of like mind... life would have seemed to me empty.

Necessity is the mother of all invention.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

The only way to escape the corruptible effect of praise is to go on working.