So now Ken doesn't have much of what you'd call a conscience, and if that's your definition of a psycho then I guess he is one. But he didn't choose it."
"What difference does it make?" Alyx demands.
"It's not like he went out shopping for an evil makeover."
"So what? When did any psycho ever get to choose his own brain chemistry?"
It's a pretty good point, Clarke has to admit.