Reaper Man by Terry Pratchett, part of the Discworld universe, leaves off like this:
Picture a tall, dark figure, surrounded by cornfields...
NO, YOU CAN'T RIDE A CAT. WHO EVER HEARD OF THE DEATH OF RATS RIDING A CAT? THE DEATH OF RATS WOULD RIDE SOME KIND OF DOG.
Picture more fields, a great horizon-spanning network of fields, rolling in gentle waves...
DON'T ASK ME I DON'T KNOW. SOME KIND OF TERRIER, MAYBE.
...fields of corn, alive, whispering in the breeze...
RIGHT, AND THE DEATH OF FLEAS CAN RIDE IT TOO. THAT WAY YOU CAN KILL TWO BIRDS WITH ONE STONE.
...awaiting the clockwork of the seasons.
And at the end of all stories Azrael, who knew the secret, thought: I REMEMBER WHEN ALL THIS WILL BE AGAIN.
What is "I remember when all this will be again" supposed to mean? Why "remember"? All what will be again? And how will it be "again"?
What does this quote mean?