Dr. X smiled. "You knew it perfectly well." He freed one hand from the 
long sleeves of his robe and shook his finger at Hackworth, like an indulgent 
teacher pretending to scold a clever but mischievous pupil. "You do these 
things not to serve your Queen but to serve your own nature, John Hackworth, 
and I understand your nature. For you cleverness is its own end, and once you 
have seen a clever way to do a thing, you must do it, as water finding a crack 
in a dike must pass through it and cover the land on the other side."