The genius is in making the complex simple.

The comprehensibility of the world seems to me a wonder or eternal secret. Here lies the sense of wonder which increases even more with the development of our knowledge.

A man's moral worth is not measured by what his religious beliefs are but rather by what emotional impulses he has received from Nature during his lifetime.

Philosophers play with the word, like a child with a doll.... It does not mean that everything in life is relative.

Betterment of conditions the world over is not essentially dependent on scientific knowledge but on the fulfillment of human traditions and ideals.

All these primary impulses, not easily described in words, are the springs of man's actions.

(Reply on what constitutes scientific proof:)"The question is much too difficult for me.