Thoughts on Life purpose

The purpose of life is not to be happy - but to matter, to be productive, to be useful, to have it make some difference that you have lived at all. ~Leo Rosten

Act as if what you do makes a difference. It does. ~William James

Do not commit the error, common among the young, of assuming that if you cannot save the whole of mankind you have failed. ~Jan de Hartog, The Lamb's War