The finest emotion of which we are capable is the mystic emotion.

The feeling for what ought and ought not to be grows and dies like a tree, and no fertilizer of any kind will do much good. What the individual can do is give a fine example, and have the courage to firmly uphold ethical convictions in a society of cynics. I have for a long time tried to conduct myself this way, with varying success.

Our defense is not in our armaments, nor in science, nor in going underground. Our defense is in law and order.

All means prove but blunt instruments, if they have not behind them a living spirit.

Love is not the stupidest thing a man does, but it cannot be blamed on gravity.

We scientists, whose tragic destination has been to help in making the methods of annihilation more gruesome and more effective, must consider it our solemn and transcendent duty to do all in our power in preventing these weapons from being used for the brutal purpose for which they were invented.

The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift.