Happiness is nothing more than good health and a bad memory.

Man has lost the capacity to foresee and to forestall. He will end by destroying the earth.

If the extension of your compassion does not include all living beings, then you will be unable to find peace by yourself.

It is a man's sympathy with all creatures that first makes him truly a man.

The stronger the reverence for natural life, the stronger grows also that for spiritual life.

True philosophy must start from the most immediate and comprehensive fact of consciousness: "I am life that wants to live, in the midst of life that wants to live."

Man can no longer live his life for himself alone. We realize that all life is valuable and that we are united to all this life. From this knowledge comes our spiritual relationship to the universe.