The conflict that exists today is no more than an old-style struggle for power, once again presented to mankind in semireligious trappings. The difference is that, this time, the development of atomic power has imbued the struggle with a ghostly character; for both parties know and admit that, should the quarrel deteriorate into actual war, mankind is doomed.

Subtle is the Lord. Malicious, He is not.

Imagination is more important than knowledge. Imagination is the language of the soul. Pay attention to your imagination and you will discover all you need to be fulfilled.

There are two ways to live: you can live as if nothing is a miracle; you can live as if everything is a miracle.

What I see in Nature is a grand design that we can understand only imperfectly, one with which a responsible person must look at with humility.

The future is an unknown, but a somewhat predictable unknown. To look to the future we must first look back upon the past. That is where the seeds of the future were planted. I never think of the future. It comes soon enough.

[Mystery] is the fundamental emotion that stands at the cradle of true art and true science.