The unleashed power of the atom has changed everything except our thinking. Thus, we are drifting toward catastrophe beyond conception. We shall require a substantially new manner of thinking if mankind is to survive.

I believe in Spinoza's God, who reveals Himself in the lawful harmony of the world, not in a God who concerns Himself with the fate and the doings of mankind... to Rabbi Herbert Goldstein (1929)

The height of stupidity is most clearly demonstrated by the individual who ridicules something he knows nothing about.

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.

We cannot get to where we dream of being tomorrow unless we change our thinking today.

Never regard study as a duty, but as the enviable opportunity to learn

It is not by sitting still at a grand distance and calling the human race larvae that men are to be helped.