And so, he knows. He wants, he needs, to do the immoral, irresponsible thing. He wants to let this boy court his own destruction. He wants to commit that cruelty. Or (kinder, gentler version) he doesn't want to reconfirm his allegiance to the realm of the sensible, all the good people who take responsibility, who go to the right and necessary parties, who sell art made of two-by-fours and carpet remnants. He wants, for at least a little while, to live in that other, darker world - Blake's London, Courbet's Paris; raucous, unsanitary places where good behavior was the province of decent, ordinary people who produced no works of genius.