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.

We must recognize what in our accepted tradition is damaging to our fate and dignity-and shape our lives accordingly.

Common sense is that layer of prejudices which we acquire before we are sixteen.

People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion.

Man would indeeded be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.

You teach me baseball and I'll teach you relativity...No we must not. You will learn about relativity faster than I learn baseball.

Nothing happens until something moves. When something vibrates, the electrons of the entire universe resonate with it. Everything is connected.