The basis of action on love, the brotherhood of all men, the value of the individual... the humility of the spirit.

This is not yet a scientific age.

It doesn't seem to me that this fantastically marvelous universe, this tremendous range of time and space and different kinds of animals, and all the different planets, and all these atoms with all their motions, and so on, all this complicated thing can merely be a stage so that God can watch human beings struggle for good and evil - which is the view that religion has. The stage is too big for the drama.

Scientific knowledge is an enabling power to do either good or bad — but it does not carry instructions on how to use it.

What Do You Care What Other People Think?

The whole question of imagination in science is often misunderstood by people in other disciplines. ... They overlook the fact that whatever we are allowed to imagine in science must be consistent with everything else we know.

You can always recognize truth by its beauty and simplicity.