He commented that he had willed his money to GiveWell 8 months ago. I don't think Quirinius Quirrell's hypothesis is particularly likely, but I also don't think it's likely that he was planning suicide for 8 months. If he wrote up a will last week, I would find that more convincing.
Why not? Do you expect he'd have said, if he was habitually suicidal?
He was arrested two years ago, so eight months is compatible with his legal troubles being a cause.
Link
One of us is no more.
He deserves a eulogy more eloquent than what I am capable of writing. Here's Cory Doctorow's, one of his long time friends.
It's a sad world in which you are being arrested and grand jury'd for downloading scientific journals and papers with the intent to share them.