Bones, Season 1

Brennan:
[disgusted] Who does this? Cuts a finger off an eight-year-old boy?

Booth:
Mercenaries, professionals. They don't feel a thing.

Brennan:
I feel things, Booth.

Booth:
Never said you didn't, Bones.

Brennan:
I'm a "professional", too. I do better work if I only see the finger and not the child. It doesn't mean I'm like them.

Booth:
Look, I know that, Bones, but what I also know is that they made a big mistake sending us that finger.

Brennan:
Why? Because it made you mad?

Booth:
No. Because you're gonna use it to catch them. So, you gather up your squint squad. Let's get to work.