As you know, a prologue is written last but placed first to explain the book’s shortcomings and to ask the reader to be kind. But a prologue is also a note of farewell from the writer to his book. For years the writer and his book have been together—friends or bitter enemies but very close as only love and fighting can accomplish.
Then suddenly the book is done. It is a kind of death. This is the requiem.
John Steinbeck