Bones, Season 3

Brennan:
I've always been proud of you, Zack. I've never met anyone more rational and intelligent. But there's a fault in your logic.

Zack:
With all due respect, you aren't cognizant of his logic.

Brennan:
Assumption number one: Secret societies exist.

Zack:
Accepted. Hodgins has been explaining this to me for years.

Brennan:
Assumption number two: The human experience is adversely affected by secret societies.

Zack:
Accepted.

Brennan:
Assumption number three: Attacking and killing members of secret societies will have an ameliorating affect on the human experience.

Zack:
Accepted.

Brennan:
All of your assumptions are built upon a first principle, Zack. To wit, the historical human experience as a whole is more important than a single person's life.

Zack:
Yes.

Brennan:
Yet, you risked it all so you wouldn't hurt Hodgins.

[Brennan moves closer to Zack and touches her forehead with his as both their eyes tears up.]

Zack:
There's... You're correct. There's an inconsistency in my reasoning.