Fans of Vicomte Raoul de Chagny

I think there's a very basic human assumption that beauty in art must reflect beauty of the soul (perhaps derived from a religious idea that all good in the world ultimately reflects/derives from divine goodness, whereas all evil is either man's own wickedness or else the inspiration of the Devil?) It's very hard to imagine that someone can write beautiful, elevating work and be himself an ordinary mortal who leaves hairs in the soap, snaps at the parlour-maid and bilks the bus-conductor of a tuppenny fare ;-) The beauty has to come from somewhere, and if not from the artist's innermost self, then where?