Use your health, even to the point of wearing it out. That is what it is for. Spend all you have before you die; do not outlive yourself.

You use a glass mirror to see your face; you use works of art to see your soul.

Beware of the man who does not return your blow: he neither forgives you nor allows you to forgive yourself.

I want to be thoroughly used up when I die, for the harder I work, the more I live. I rejoice in life for its own sake. Life is no “brief candle” to me. It is a sort of splendid torch which I have got hold of for the moment, and I want to make it burn as brightly as possible before handing it on to future generations.

The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.

If you injure your neighbour, better not do it by halves.