Infinite striving to be the best is man's duty; It is its own reward. Everything else is in god's hands. It's not that I'm so smart, it's just that I stay with problems longer.

I never said half the crap people said I did.

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.

Man usually avoids attributing cleverness to somebody else unless it is an enemy.

Common sense invents and constructs no less than its own field than science does in its domain. It is, however, in the nature of common sense not to be aware of this situation.

Overpopulation in various countries has become a serious threat to the health of people and a grave obstacle to any attempt to organise peace on this planet

There is possibility in every difficulty.