I don't have much to say. I'm only posting it here because most of you probably know who he is, which is more than I can say for most of my friends.

I don't know the details yet- but I know he was in late stages of Alzheimer's, and was a strong advocate for right-to-die laws. That, combined with his last tweets (link), make me assume this was planned, or at least not unexpected.

I'm just very sad.