"No man is an island, entire of it self; every man is a piece of the
 continent, a part of the main; if a clod be washed away by the sea,
 Europe is the less, as well if a promontory were, as well if a manor of
 thy friends or of thine own were; any man's death diminishes me,
 because I am involved in Mankind; And therefore never send to know
 for whom the bell tolls; It tolls for thee."
           -John Donne (from Meditation XVII)