Aubrey

(while driving to suspects house in Nebraska)
Mulder: You mean a hunch?
Scully: I seem to remember you having some pretty 
        extreme hunches.
Mulder: I never have.

(Description: Mulder comparing dental X-rays.)
Scully:  Any cavities?
Mulder:  No, I brush after every meal.

(in motel room discussing inherited traits)
Scully: I don't think Mendel had serial killers in mind when 
        he developed his theory.

Mulder: During their time, Cheney's and Ledbetter's ideas 
        weren't very well received by their peers. 
        Using psychology to solve a crime was something 
        like... (points to Scully)
Scully: Believing in the paranormal?
Mulder: Exactly.  But there's another mystery.
Scully: Which is?
Mulder: Well, I'd like to know why this police woman 
        would suddenly drive her car into a field the size 
        of Rhode Island and for no rhyme or reason dig up 
        the bones of a man who's been missing for 50 years. 
        I mean unless there was a neon sign saying 
        'Dig Here'...

Mulder: There are countless stories of twins who are 
        separated at birth who end up in the same occupation, 
        marrying the same kind of people, each naming their 
        child Waldo. 
Scully: Waldo?