The most important decision we make is whether we believe we live in a friendly or hostile universe.

It is the duty of every citizen according to his best capacities to give validity to his convictions in political affairs.

Everything that exists in your life, does so because of two things: something you did or something you didn't do.

I cannot conceive of a God who rewards and punishes his creatures, or has a will of the kind that we experience in ourselves. Neither can I nor would I want to conceive of an individual that survives his physical death; let feeble souls, from fear or absurd egoism, cherish such thoughts. I am satisfied with the mystery of the eternity of life and with the awareness and a glimpse of the marvelous structure of the existing world, together with the devoted striving to comprehend a portion, be it ever so tiny, of the Reason that manifests itself in nature.

The basic laws of the universe are simple, but because our senses are limited, we can’t grasp them. There is a pattern in creation.

In art, and in the higher ranges of science, there is a feeling of harmony which underlies all endeavor. There is no true greatness in art or science without that sense of harmony.

Time is an illusion.