Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives." "Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives.

We owe a lot to the Indians, who taught us how to count, without which no worthwhile scientific discovery could have been made.

Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

The difference between what the most and the least learned people know is inexpressibly trivial in relation to that which is unknown.

Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking.

Growth comes through analogy; through seeing how things connect, rather than only seeing how they might be different.

I want to go when I want. It is tasteless to prolong life artificially. I have done my share, it is time to go. I will do it elegantly.