"How strange is the lot of us mortals!  Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it.  But without deeper reflection one knows from daily life that one exists for other people - first of all for those upon whose smiles and well-being our own happiness is wholly dependent, and then for the many, unknown to us, to whose destinies we are bound by the ties of sympathy.  A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received  and am still receiving..."

Albert Einstein -

from "The World As I See It"