The Moving Finger Writes ...
This vast book is arranged in a curious fashion. No matter where you open it, no matter how you turn the gargantuan sheets of parchment [for such is the stuff of legendary books, my dear,] you will find that for each and every soul there are two pages, identified at the top with the person’s name. Wherever you choose to open the book you will find, inscribed in an elegant elfin script, all the events of one single life displayed.
Look more closely, child. The book is open to a name. See? On the left-hand page is written, neatly in order, all of the bad things that person has done. And, as you might guess [this being a true legend,] on the right-hand page, again in strict order, each and every good thing he or she did is put down, line by line, day by day, detailed for all eternity in ink of deepest black.
New entries are made each day for those now living. If an evil or bad thing, it is entered on the left-hand page. If a good thing, on the right-hand page.
Attend me, now. There is one curiosity in the entries. If one has had an opportunity to do something pleasurable, something which does no-one an injury, and has for whatever reason abstained from the doing of it, the entry records the choice … on the left-hand page.