John Donne: Meditation XVII

Now this bell, tolling softly for another, says to me, Thou must die.(Nunc Lento Sonitu Dicunt, Morieris)

John Donne (1573 - 1631)

Perchance, he for whom this bell tolls may be so ill, as that he knows not it tolls for him; and perchance I may think myself so much better than I am, as that they who are about me, and see my state, may have caused it to toll for me, and I know not that. 
The bell doth toll for him that thinks it doth; 
No man is an Iland, intire of it selfe; every man is a peece of the Continent, a part of the maine; if a Clod bee washed away by the SeaEurope is the lesse, as well as if  a  Promontorie were, as well as if a Mannor of thy friends or of thine owne were;
any mans death diminishes me, because I am involved in Mankinde; And therefore never send to know for whom the bell tolls; It tolls for thee.