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

When people have light in themselves, it will shine out from them. Then we get to know each other as we walk together in the darkness, without needing to pass our hands over each other's faces, or to intrude into each other's hearts.

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

Man can hardly even recognize the devils of his own creation.

The only thing of importance, when we depart, will be the traces of love we have left behind.

Man has become a superman ... because he not only disposes oinnate, physical forces, but because he is in command ... olatent forces in nature and because he can put them to his service.... But the essential fact we must surely all feel in our hearts ... is that we are becoming inhuman in proportion as we become supermen.

What does Reverence for Life say abut the relations between [humanity] and the animal world? Whenever I injury any kind of life I must be quite certain that it is necessary. I must never go beyond the unavoidable, not even in apparently insignificant things. The farmer who has mowed down a thousand flowers in his meadow in order to feed his cows must be careful on his way home not to strike the head off a single flower by the side of the road in idle amusement, for he thereby infringes on the law of life without being under the pressure of necessity.