Skinner: You spelled Federal Bureau of Investigation wrong. “Mulder”: It’s a typo. Skinner: Twice.

Scully: ...Apparently he'd been watching this tape when he was strangled to death. Mulder: Very Old Testament. Scully: Yeah. But with a new twist. The Brooklyn Homicide detectives contacted the FBI civil rights branch with an interesting set of fingerprints that they pulled off the boy's body. Mulder: Interesting how? Scully: Interesting in that they belong…

Cigarette Smoking Man (William B. Davis): I work very hard to keep any president from knowing I exist.

Treehouse of Horror VII Marge: You went into the attic? I'm very disappointed and terrified. Dr. Hibbert: You don't forget a thing like Siamese twins! Lisa: I believe they prefer to be called "conjoined twins." Dr. Hibbert: And hillbillies prefer "sons of the soil." But it ain't gonna happen. Lisa: My god, I've created life!…

Scully: You said it yourself once. You said that a dream was an answer to a question we haven’t learned how to ask.

Bruckman: You know there are worse ways to go, but I can’t think of a more undignified one than autoerotic asphyxiation. Mulder: Why are you telling me that?

Scully: You have a theory on what’s going on here? Mulder: I just don’t think it’s lightning.

Albert Hosteen: …On this day, when the holy people had given the FBI man a miracle, a white buffalo was born. And every Native American knew—whether he believed the story or not—that this was a powerful omen, and that great changes were coming.

Albert Hosteen (Floyd “Red Crow” Westerman): There is an ancient Indian saying that something lives only as long as the last person who remembers it. My people have come to trust memory over history. Memory, like fire, is radiant and immutable. While history serves only those who seek to control it. 

Mulder: What if someone dies because we withheld what we knew? CSM: What if someone dies because we didn’t? There will be a time for the truth, Mulder, but this isn’t it.

Head Calusari: The evil that is here has always been. It has gone by different names through history. Cain. Lucifer. Hitler. It does not care if it kills one boy or a million men. If try to stop us, the blood will be on your hands.

Dr. Blockhead: Nature abhors normality. It can’t go long without creating a mutant.

Scully: What happened? Captain Barkley: Time got lost.

Coming Soon. In theory.

X: You’ll only win the war if you pick the right battles, Agent Mulder. This is a battle you can’t win.