Right proportions.........................

These truths I hold to be self-evident:  That man was made to be happy;  that happiness is only attainable through useful effort;  that the very best way to help ourselves is to help others, and often the best way to help others is to mind our own business;  that useful effort means the proper exercise of all of our faculties;  that we grow only through exercise;  that education should continue through life, and the joys of mental endeavor should be, especially, the solace of the old;  that where men alternate work, play and study in right proportions, the organs of the mind are the last to fail, and death for such has no terrors.

-Elbert Hubbard, as excerpted from A Message To Garcia:  And Other Essential Writings On Success