Each makes this cosmos and its construction the pivot of his emotional life, in order to find in this way peace and security which he can not find in the narrow whirlpool of personal experience.

You have to color outside the lines once in a while if you want to make your life a masterpiece.

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.

There is nothing divine about morality; it is a purely human affair. If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed. What the individual can do is to give a fine example, and to have the courage to uphold ethical values .. in a society of cynics.

The dog is very smart. He feels sorry for me because I receive so much mail; that's why he tries to bite the mailman.

I think that only daring speculation can lead us further and not accumulation of facts.

The idle man does not know what it is to enjoy rest.