I don't blame you, it's hard to tell offhand who'd be willing... but the more tests you can run, the better. I'll offer up mine too, even if I'm just a plain-old standard earthling. [He still wishes he had Scully around to help with this situation. She's never far from his mind, especially when it's something that he knows she'd have done for him.]

If they were to talk to us too much, and get too close to us, they'd end up in a position where more of their flaws would be exposed. They'd thus give up some of their power. And they couldn't have that. Which makes it frustrating for trying to understand them. I can profile them as a collective, but damned if they make it difficult to get a handle on them as individuals...

Instead, they hide in their 'safety', far removed from the people they're affecting, as they plot and scheme to conceal the truth of their wrongdoing. [He sounds pretty worked up there, but this is one of the things that really gets him livid.]