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.

It is impossible to get out of a problem by using the same kind of thinking that it took to get into it.

The only reason for time is so that everything doesn't happen at once.

[Kepler] had to realize clearly that logical-mathematical theoretizing, no matter how lucid, could not guarantee truth by itself; that the most beautiful logical theory means nothing in natural science without comparison with the exactest experience. Without this philosophic attitude, his work would not have been possible.

Time and space are not conditions of existence, time and space is a model for thinking

If I were not a Jew I would be a Quaker.

God is clever, but not dishonest.