He stopped doing cocaine because when he blew his nose, he literally thought he was blowing little chunks of brain into the tissue, that the coke was starting to actually, physically turn his brain into mucus.
Whenever you think you’re being paranoid about something just remember that David Bowie took paranoid to a new extreme when after meeting Jimmy Page in the 70s, he kicked him out of his house because he was convinced Page was trying to steal his soul and then had his pool exorcised afterwards. That my friends is paranoia at it’s best
At that same time in his life, David Bowie was also storing his urine in a freezer in case certain people (including Jimmy Page) tried to steal it in order to magically bring him harm.
Cocaine is a hell of a drug.
"Do you believe in aliens?"
“No, man, I don’t believe in outer space.”