It seemed incredible to me, that physical courage should be so commonplace and revered, while moral courage . . . is so rare and despised.

To the truly ethical man, all of life is sacred, including forms of life that from the human point of view may seem lower than ours.

We need a boundless ethics which will include animals also.

Cold completely introspective logic places a philosopher on the road to the abstract. Out of this empty, artificial act of thinking there can result, of course, nothing which bears on the relation of man to himself, and to the universe.

At that point in life where your talent meets the needs of the world, that is where God wants you to be.

We must all die. But that I can save him from days of torture, that is what I feel as my great and ever new privilege. Pain is a more terrible lord of mankind than even death itself.

If a man loses his reverence for any part of life, he will lose his reverence for all of life.