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 as if a promontory were, as
well as 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 ( 1571? - 1631 ), Meditation XVII