There was a burst of something that was magic and also more, a shout louder than an earthquake and containing a thousand books, a thousand libraries, all spoken in a single cry that was Hermione; too vast to be understood, …

This is one of the saddest things I have ever read.

Also, it reminds me of Ed Fredkin's work on digital philosophy; specifically, conservation of information:

In ordinary physics, conservation of information is not something that has the same absolute character as conservation of momentum. If DP makes sense, then that would mean that in the real world information could never be lost, and as a consequence we might conclude that information would be conserved, absolutely, just as momentum is conserved.

I predict once Harry inevitably becomes omnipotent, he will recover Hermione's pattern, and reconstitute it in the center of a Hermione shell.