"Not that I know of," Desi said when Victor asked if spirits ever faded. The way Victor had worded things made him wonder if Victor was not yet thinking of himself as a spirit. That did happen with some.  "One of the older ghosts I am personally aware of is in his 300's. Another is even older. Ghosts are able to send each other letters though I am not certain on how. Perhaps you could use that method to reach out to your fellow spirits." Hmm, perhaps he ought to look into getting approval on hiring on a spirit to work in the division and receive ghostly letters. It would sure make things easier than just having random spirits wreaking havoc in his office when they were in A Mood.