The X-Files, Season 6

[Scully enters Skinner's room at the hospital. He looks very sick, but smiles as she enters.]

Scully:
Sir, there's something I'd like to try. It's a treatment called therapeutic plasmapheresis. It requires filtering all of the blood in your body. It's a radical procedure and there is a danger that your body might go into shock.

Skinner:
I'm in your hands. (weakly) I think I owe you an apology, Scully. You and Mulder.

Scully:
Sir?

Skinner:
I've been lying here thinking. Your quest... it should have been mine.

Scully:
What do you mean?

Skinner:
If I die now, I die in vain. I have nothing to show for myself. My life...

Scully:
Sir, you know that's not true.

Skinner:
It is. I can see now that... I always played it safe. I wouldn't take sides. Wouldn't let you and Mulder... pull me in.

Scully:
You've been our ally more times than I can say.

Skinner:
Not the kind of ally that I could have been. (Scully touches his wrist gently)