Deep Throat: The world's reaction to such knowledge would be far too dangerous.
Mulder: Dangerous. You mean in a sense of outrage, like the reaction to the Kennedy assassinations or M.I.A.s or radiation experiments on terminal patients, Watergate, Iran-Contra, Roswell, the Tuskegee experiments, where will it end? Oh, I guess it won't end as long as...men like you decide what is truth.

Deep Throat: If a shark stops swimming, it will die. Don't stop swimming.

Deep Throat: Leave this case alone, Agent Mulder.
Mulder: What?
Deep Throat: The military will not tolerate an FBI investigation.
Mulder: Who are you?
Deep Throat: I, er, can be of help to you. I've had a certain interest in your work.
Mulder: How do you know about my work?
Deep Throat: Well, let's just say that I'm in a position to know quite a lot of things, er, things about our government.
Mulder: Who are you? Who do you work for?
Deep Throat: It's unimportant, I came here to give you some valuable advice. You are exposing yourself and Agent Scully to unnecessary risk, I advise you to drop the case.
Mulder: I can't do that.
Deep Throat: You have much work to do, Agent Mulder, don't jeopardise the future of your own efforts.

Deep Throat: Mister Mulder, why are those like yourself, who believe in the existence of extraterrestrial life on this Earth, not dissuaded by all the evidence to the contrary?
Mulder: Because, all the evidence to the contrary is not entirely dissuasive.
Deep Throat: Precisely.
Mulder: They're here, aren't they?
Deep Throat: Mister Mulder, they've been here for a long, long time.

Deep Throat: You're awfully quiet, Mr. Mulder.
Mulder: I'm wondering which lie to believe.

Det. Fiore: Best we can figure, it was some kind of payback.
Mulder: For what?
Det. Fiore: Well, around that time, the organized crime division was doing a major sweep in Chinatown.
Mulder: The Triads.
Det. Fiore: Yeah. Some very heavy busts went down against the Woo Shing Woo. A lot of smack never made it to the street. You can bet there were some pretty pissed off people playing mahjong that week.
Mulder: So you think that Charlie Morris was killed as a warning to back off?
Det. Fiore: I think they picked a cop - any cop - and they whacked him.

Detective White: These are good kids we're talking about. Outstanding students. And the details they gave... I doubt they could have made them up.
Scully: Let me guess. They told you about a wild beast entering in on a black mass, the drinking of blood, the sacrifice of an infant or a blond virgin.
Detective White: Yeah. That's right. Excuse me.
Scully: Where's she going?
Mulder: You don't suppose she's a virgin, do you?
Scully: I doubt she's even a blond.

Dr. Berenbaum: Well, it's my theory that UFOs are actually insect swarms. I don't know if you know anything about UFOs...
Mulder:[lets out a small faint murmur, turns head vaguely]
Dr. Berenbaum:... but all the characteristics of a typical sighting are shared with nocturnal insects swarming through an electrical air field... the sudden appearance of a colored, glowing light hovering in the night sky, moving in a nonmechanical matter, possibly humming... creating interference with radio and television signals... then suddenly disappearing.
Mulder: As, uh... as nocturnal insect swarms. That's, uh... that's fascinating.

Dr. Browning: An old coroner's trick.
Mulder: I can make a quarter appear from behind your ear.

Edward Funsch: [realises he needs to get off the bus] Excuse me?
Bus Driver: Wait for the next stop.
Edward Funsch: Please, I'm on the wrong bus.
Bus Driver: Just wait for the next stop.
Edward Funsch: [starts to panic] Open the door... OPEN THE DOOR!!! OPEN THE DOOR, DAMN IT!!!

Ellen: What about that guy you work with?
Scully: Mulder?
Ellen: I thought you said he was cute.
Scully: He's a jerk. He's not a jerk. He's, um... he's obsessed with his work.

Eve 10: Hello, Eve 8.
Eve 9: We've been waiting ...
Eve 8: How did you know I'd come for you ?
Eve 10: We just knew.
Eve 9: We just knew.

Fox Mulder: I have lived with a fragile faith built on vague memories from an experience that I could neither prove nor explain. When I was 12, my sister was taken from me, taken from our home by a force that I came to believe was extraterrestrial. This belief sustained me, fueling a quest for truths that were as elusive as the memory itself. To believe as passionately as I did was not without sacrifice, but I always accepted the risks - to my career, my reputation, my relationships, to life itself.

Frohike: He was a good friend. A redwood among mere sprouts. I guess this means he's passing you the torch?
Scully: Uh, I'm afraid not. I'm soon to be out of a job.
Frohike: Those sons of bitches! They're rigging the game.
Scully: And like rats they just scatter back into the wood pile.
Frohike: The rats that killed the cat.

Frohike: So Mulder, where's your little partner?
Mulder: She couldn't come. She was afraid of her love for you.