My question concerns Nietzsche's Anti-Christ, section 44. He's talking here about how the Gospels (and Christianity generally) have been historically read as "the Book of Innocence". The part which puzzles me reads:"The whole of mankind, even the finest heads of the finest epochs (with one exception who is perhaps merely a monster) have allowed themselves to be deceived." (A.44) My question is: Who is the "monster" who Nietzsche is here referring to?