We are united with all life that is in nature. Man can no longer live his life for himself alone.

Only when an ideal of peace is born in the minds of the peoples will the institutions set up to maintain this peace effectively fulfill the function expected of them.

No one can give a definition of the soul. But we know what it feels like. The soul is the sense of something higher than ourselves, something that stirs in us thoughts, hopes, and aspirations which go out to the world of goodness, truth and beauty. The soul is a burning desire to breathe in this world of light and never to lose it--to remain children of light.

It is through the idealism of youth that man catches sight of truth, and in that idealism he possesses a wealth which he must never exchange for anything else.

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.

We all owe to others much of the gentleness and wisdom that we have made our own; and we may well ask ourselves what will others owe to us

The doctor of the future will be oneself.