Caesura: it’s not the end of the line

Is the afterlife just the second half of a line of verse?

I came across an interesting use of this word in a Media Guardian article about the death of Reinhard Mohn, the owner of Europe’s largest media group, Bertelsmann: ‘Mohn’s death has been described by German commentators as a “caesura”‘.

So is the afterlife just the second half of a line of verse? And if so, from which poem? Paradise Lost or Paradise Regained? ‘Futility’ or ‘Easter Wings’? Or is this some deeply existential statement about life imitating art?