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 bell tolls; It tolls for thee.

Recommended reading: The Complete English Poems.