For Whom the Bell Tolls

From John Donne, quoted by Hemingway:

No man is an island,Entire of itself.Each 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 manner of thine ownOr of thine friend's were.Each man's death diminishes me,For I am involved in mankind.Therefore, send not to knowFor whom the bell tolls,It tolls for thee.