The X-Files, Season 2

Mulder:
Get that gun out of my face!

Mr. X:
This high-capacity compact Sig Sauer .40 caliber weapon is pointed at your head to stress my insistence that your search for who put your partner on that respirator desist immediately!

Mulder:
You ignore my call for help and then you expect me to do what you say-- you go to hell!

Mr. X:
You got him killed! You got her killed! That's not going to happen to me! You're my tool, you understand? I come to you when I need you! Right now, you're heading in a direction that can lead them right here.

Mulder:
What the hell are you talking about?

Mr. X:
You're not supposed to know. That's the point.

Mulder:
I owe her more than just sitting around doing nothing.

Mr. X:
She was a good soldier, Mulder, but there's nothing you can do to bring her back.

Mulder:
She's not dead.

Mr. X:
[laughing] Listen to you. Listen. You're a damn schoolboy, Mulder. You have no idea. No idea!

Mulder:
Okay, then tell me. Tell me!

Mr. X:
...I used to be you. I was where you are now. But you're not me, Mulder. I don't think you have the heart. Walk away. Grieve for Scully and then never look back. You will be able to live with yourself, Mulder... on the day you die.