web site that says a lot about the furnishings in each room of the house -- the doorknocker is a bronze medusa -- but, again, not much about what motivated Stuck's interest in art, or myth, or the Symbolist movement, or anything else.
blah, blah. Is that all there is to it? I did find one interesting little video in which two critics noted that von Stuck treated all of his stock characters as individuals, with different mixtures of the victim and the villain. Also, they said, paintings like Sin invite the viewer in, placing you right next to the semi-mythical subject -- this is a symbol but also a person. That hints at a sort of thinking, in which von Stuck explored the relation between archetypal symbols and the particular model he hired to represent them, between the way we look at a marble goddess and way we look at a woman standing beside us.