Well... that's good. [With a brief stab at humour, as well as further explanation, Kaidan explains.] We have a couple aliens here, and while they're still going to exist whether or not you believe in them, it's a little awkward when people don't.

As for the insane... well, maybe. But I've been here for over a year and I'm pretty sure this is more than just head trauma or psychosis can explain.

[It might, he hasn't quite been able to reassure himself out of wondering, be Indoctrination. If it is, he's screwed regardless.]