The X-Files, Season 6

Mulder:
It would help if you'd shut the door. It would make it harder for them to see that I'm totally disregarding everything I was told.

Scully:
(closing the door) Everything we were told, Mulder.

Mulder:
They can't take away the X-Files, Scully. They tried.

Scully:
You know, Agent Fowley's report to OPR painted the facts in an interesting way. I hope you haven't been betrayed.

Mulder:
(not looking at her) Agent Fowley's report was a means to an end. Trying to protect the work. Protect the X-Files.

Scully:
Mulder, Agent Fowley's report states that the man you saw attacked was bludgeoned by an unknown subject. She makes no mention of a little boy who as it happens, is nowhere to be found. It would seem that her report protects everything but you.

Mulder:
Agent Fowley took me to that plant at great risk to herself where I saw something that you refuse to believe in. Saw it again, Scully. And though it may not say it in her report, Diana saw it, too. And no matter what you think she's certainly not going to go around saying that just because science can't prove it isn't true.

Scully:
I don't doubt what you saw, Mulder. I don't doubt you. I'm willing to believe, but not in a lie and not in the opposite of what I can prove. It comes down to a matter of trust. [He looks up at her] I guess it always has.

Mulder:
You asking me to make a choice?

Scully:
I'm asking you to trust my judgment. To trust me. [Hands him a folder]

Mulder:
I can't accept that. Not if it refutes what I know to be true.

Scully:
Mulder, these are test results. DNA from the claw nail we found matching exactly the DNA from the virus you believe is extraterrestrial.

Mulder:
[Takes the folder and looks at the papers inside] That's the connection.

Scully:
Which matches exactly DNA that was found in Gibson Praise.

Mulder:
Wait a minute. I don't understand. You're saying that Gibson Praise is infected with the virus?

Scully:
No. It's a part of his DNA. In fact, it's a part of all of our DNA. It's called a genetic remnant. It's inactive junk DNA. Except in Gibson it's turned on.

Mulder:
So if that were true, that would mean that Gibson is in some part extraterrestrial.

Scully:
It would mean that all of us are.