Maybe he's really worried about Harry breaking the Universe at some point like Quirrel'd been worrying about some chapters earlier, and yet for whatever reason Harry's too important for his future plans to just kill? Though I can't decide which idea leaves me less confused, that one, or just "ulterior motives, hidden because able to lie in parseltongue".
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 111.
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: