Jubal sighed. "I agree with both of you.  I'd rather see Mike smoking marijuana than be converted by Digby.  But I don't think there is the slightest chance of Mike's being taken in by that syncretic hodgepodge Digby peddles...and he's got to learn to stand up to bad influences.  I consider you a good influence - but I don't really think you stand much more chance than Digby has - the boy has an amazingly strong mind of his own.  Muhammad may have to make way for a new prophet."