Yes, and isn't that what Luc depends on? The two tragic thoughts on evil are man is willing to believe what he wants to believe and that all evil needs to thrive is for good men to look away.
I think Kripke and company portrayed the devil brilliantly, soft-spoken and almost reasonable. I was glad that Dean called him for what he was, just like all the cockroaches he'd hunted his whole life. Maybe you have to be infinitely familiar with true evil to really understand and see it. Hunters certainly have seen their fair share of evil beings.
Thanks again, you're a great support for all the writers out there looking for feedback.
Take care, B.J.