Civilization can only revive when there shall come into being in a number of individuals a new tone of mind, independent of the prevalent one among the crowds, and in opposition to it - a tone of mind which will gradually win influence over the collective one, and in the end determine its character. Only an ethical movement can rescue us from barbarism, and the ethical comes into existence only in individuals.

Because I have confidence in the power of truth and in the spirit, I believe in the future of mankind. Affirmation of the world and of life contains within itself an optimistic willing and hoping which can never be lost. It is, therefore, never afraid to face the dismal reality and to see it as it really is.

Happiness is the only thing that multiplies when you share it.

A man can do only what he can do. But if he does that each day he can sleep at night and do it again the next day.

You know of the disease in Central Africa called sleeping sickness. . . . There also exists a sleeping sickness of the soul. Its most dangerous aspect is that one is unaware of its coming. That is why you have to be careful. As soon as you notice the slightest sign of indifference, the moment you become aware of the loss of a certain seriousness, of longing, of enthusiasm and zest, take it as a warning. You should realize your soul suffers if you live superficially.

An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight... the truly wise person is colorblind.

The true worth of a man is not to be found in man himself, but in the colours and textures that come alive in others.