""Human perversity is greater than human heroism [...] or cowardice [...] or art," my dancing mother declaimed. "For there are limits to these things, there are points beyond which we will not go in their name; but to perversity there is no limit set, no frontier that anyone has found. Whatever today's excess, tomorrow's will exceed-o it.""

The Moor's Last Sigh, by Salman Rushdie