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.

I now see the necessity of a beginning.

Smoke like a chimney, work like a horse, eat without thinking, go for a walk only in really pleasant company.

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

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.

The same thinking and actions that created our problems cannot be used to solve them.

The most beautiful gift of nature is that it gives one pleasure to look around and try to comprehend what we see.