The great secret of success is to go through life as a person who never gets used up. That is possible for those who never argue and strive with people and facts, but in all experience retires upon themselves, and look for the ultimate cause of things in themselves.

Very little of the great cruelty shown by men can really be attributed to cruel instinct. Most of it comes from thoughtlessness or inherited habit. The roots of cruelty, therefore, are not so much strong as widespread. But the time must come when inhumanity protected by custom and thoughtlessness will succumb before humanity championed by thought. Let us work that this time may come.

The first step in the evolution of ethics is a sense of solidarity with other human beings.

Man is a clever animal who behaves like an imbecile.

All the kindness which a man puts out into the world works on the heart and thoughts of mankind.

The greatest thing is to give thanks for everything. He who has learned this knows what it means to live. He has penetrated the whole mystery of life: giving thanks for everything.

We wander through this life together in a semi-darkness in which none of us can distinguish exactly the features of his neighbour. Only from time to time, through some experience that we have of our companion, or through some remark that he passes, he stands for a moment close to us, as though illuminated by a flash of lightning. Then we see him as he really is.