No man is an island, entire of itself;

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 friend's 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 bells tolls;

 it tolls for thee.

by John Donne