Nunc lento sonitu dicunt, morieris

From John Donne's Meditation XVII from Devotions Upon Emergent Occasions :

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 church is catholic, universal, so are all her actions; all that she does, belongs to all. When she baptizes a child, that action concerns me; for that child is thereby connected to that head which is my head too, and ingraffed into that body, whereof I am a member. And when she buries a man, that action concerns me; all mankind is of one author, and is one volume; when one man dies, one chapter is not torn out of the book, but translated into a better language; and every chapter must be so translated; God employs several translators; some pieces are translated by age, some by sickness, some by war, some by justice; but God's hand is in every translation, and his hand shall bind up all our scattered leaves again, for that library where every book shall lie open to one another; as therefore the bell that rings to a sermon, calls not upon the preacher only, but upon the congregation to come; so this bell calls us all: but how much more me, who am brought so near the door by this sickness. . .

. . . 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. . .

John Donne
(English, 1572 - 1631)

Read it all.
(Nunc lento sonitu dicunt, morieris. Now this bell tolling softly for another, says to me, Thou must die.)