A book is like a piece of rope; it takes on meaning only in connection with the things it holds together.

Nature has not been lavish in her endowments, but each person has his or her own potential in terms of achievement and service. The awareness of that potential is the discovery of purpose; the fulfillment of that potential is the discovery of strength.

Optimism doesn't wait on facts. It deals with prospects. Pessimism is a waste of time.

The growth of the human mind is still high adventure, in many ways the highest adventure on earth.

Reverence for life is more than solicitude or sensitivity for life. It is a sense of the whole, a capacity for inspired response, a respect for the intricate universe of individual life. It is the supreme awareness of awareness itself.

We will not have peace by afterthought.

More and more, the choice for the world's people is between becoming world warriors or world citizens.