Fiercely creative, kind, generous, but strong and unwilling to take shit from anyone, he went off the rails rarely. Once he claimed to be an admirer of fascism, but retracted it later, explaining that he was out of his mind and heavily under the influence while interviewed. He kept working up to the end, his latest album, BlackStar was released on his 69th birthday, just two days ago.
You can read more about him elsewhere, but I'd like to leave you with the following. It's a vocal only track of Bowie and Freddie Mercury recording "Under Pressure." Listen to the raw emotion of these two great artists with only their voices, multitracked and sometimes doubled or chorused as support. Try not to cry, I dare you.