good and or evil

"As far as his interest is concerned, it makes no difference if he intends to take his heroes to take his heroes from the class of pernicious or of good characters, since the very measure of power required for good can quite often, for that reason, be demanded in something evil. When we make aesthetic judgments, we focus far more on power than on its orientation and far more on freedom than on lawfulness." (Schill, On the Pathetic, p. 67-68)

This perhaps could contribute to the moral argument against santiago sierra's work. Why is his work so striking? Perhaps this is because we are more drawn towards its power of influence towards our moral capacity opposed to the moral found in its performance.