"You are always pretending to care for nothing but your own interest, and yet here you have gone out of your way to incur odium, knowing, you say, that your cause was all but hopeless." "Well, I do it because I like it.

It's a sort of sporting with your true doctor.

He blazes away at a disease where he sees one, as he would at a bear or a lion; the very sight of it excites his organ of destructiveness.

Don't you understand me?
You hate sin, you know.
Well, I hate disease.

Moral evil is your devil, and physical evil is mine.