I don't really do a lot of creative writing, poems, song lyrics, etc., mostly it's more of a straight composition style. But I have found I can jot down some ideas I have while I'm high, then go back and expand or unskew them later. Just trying to come up with a final draft when I'm high is usually a disaster, but integrating the altered state ideas can sometimes result in some interesting pieces.
Yes, along with Lao Tzu, Socrates and Nietzche, Ozzy has definately earned his place in history. I am sure that in the aeons to follow, he will be deeply discussed amongst academics.