A conviction akin to religious feeling of the rationality or intelligibility of the world lies behind all scientific work of a high order.

If the believers of the present-day religions would earnestly try to think and act in the spirit of the founders of these religions then no hostility on the basis of religion would exist among the followers of the different faiths. Even the conflicts and the realm of religion would be exposed as insignificant.

Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.

If only I had known, I should have become a watchmaker.

Any society which does not insist upon respect for all life must necessarily decay.

It is not by sitting still at a grand distance and calling the human race larvae that men are to be helped.

Infinite striving to be the best is man's duty; It is its own reward. Everything else is in god's hands. It's not that I'm so smart, it's just that I stay with problems longer.