The X-Files, Season 7

[COPS crew rides with Mulder and Scully]

Mulder:
I'd have to say that at, uh, this point in the investigation, I'm-I'm usually more secure in-in what it is we are actually investigating, but.. we've had so many conflicting eyewitness reports that it's-it's hard to ascertain exactly what it is we're looking for... But the crimes we are investigating are-are paranormal. Uh, I can say that - With absolute conviction. Um.. and-and the nature of these crimes - they're-they're notoriously difficult to quantify on any rigorous scientific level, as Agent Scully will tell you.

Scully:
Ohh yeah.

Mulder:
Yeah, which-which in its own way is-is a kind of a validation, if you think about it in and of itself. Uh, but, you know, that-that's our job - That's why they pay us the big bucks.