In the same way as the tree bears the same fruit year after year, but each time new fruit, all lastingly valuable ideas in thinking must always be reborn.

Whatever you have received more than others-in health, in talents, in ability, in success, in a pleasant childhood, in harmonious conditions of home life-all this you must not take to yourself as a matter of course. In gratitude for your good fortune, you must remember in return some sacrifice of your own life for another life.

As soon as man does not take his existence for granted, but beholds it as something unfathomably mysterious, thought begins.

I can do no other than be reverent before everything that is called life. I can do no other than to have compassion for all that is called life. That is the beginning and the foundation of all ethics.

Only an ethical movement can rescue us from barbarism, and the ethical comes into existence only in individuals.

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.

A good example has twice the value of good advice