Resistance Is NOT Futile
Dalek: We have your associate. You will obey or she will be exterminated.
The Doctor: No.
Dalek: Explain yourself.
The Doctor: I said "No."
Dalek: What is the meaning of this negative?
The Doctor: It means "No."
Dalek: But she will be destroyed.
The Doctor: No, because this is what I'm going to do, I'm going to rescue her. I'm going to save Rose Tyler from the middle of the Dalek fleet, and then I'm going to save the Earth, and then, just to finish off, I'm going to wipe every last stinking Dalek out of the sky.
Dalek: But you have no weapons, no defenses, no plan.
The Doctor: Yeah, and doesn't that scare you to death?
This is more than just bravado. This sums up for me the essential spirituality of Doctor Who - Resistance Is NOT Futile. In the face of false dichotomies and overwhelming odds there are always choices, and accepting the ones offered to you is often just plain stupid. Life is seldom "either or."
Further, the powers that be will always threaten to take away the things you love if you fail to obey. Don't believe them. They can't take what they can't comprehend.