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.

John Donne (1571-1631).