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 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.

Meditation 17. This was the source for the title of Hemingway's novel. Original text: "No man is an Iland intire of itselfe; every man is a peece of the continent, a part of the maine; if a clod bee washed away by the Sea, Europe is the lesse, as well as if a Promontorie were, as well as if a Mannor of thy friends or of thine own were; any man’s death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls. It tolls for thee."—M. Wilson, "No Man is an Island", International Review of Mission, 56 (1967), pp. 344-354