In my experience, the best creative work is never done when one is unhappy.

Anyone can be a genius, if they pick just one specific subject and study it diligently just 15 minutes each day.

Where there is love, there is no imposition.

Ninety nine failed solutions equals a gain of 99 pieces of information.

Though our conduct seems so very different from that of the higher animals, the primary instincts are much alike in them and in us.

There is, however, a somber point in the social outlook of Americans. Their sense of equality and human dignity is mainly limited to people of white skin.... The more I feel like an American, the more the situation pains me.

I assert that the cosmic religious experience is the strongest and the noblest driving force behind scientific research.