Bones, Season 9

[Inside Aldo's bar]

Brennan:
Booth wants to kill Pelant, which is fine. He's a very bad man, he's murdered...we don't know how many people. What if there's someone worse and we need Pelant to catch that killer?

Aldo:
[rolls his eyes] Oh god... [looks at Brennan] It's these ethical dilemmas that drove me out of the priesthood.

Brennan:
I need to know what Booth is going to do.

Aldo:
So you can protect Pelant.

Brennan:
He's more valuable alive than dead, that's all.

Aldo:
It depends which Booth is there.

Brennan:
[confused] Seeley Booth, the one I love.

Aldo:
No, I mean, like all of us, he has two sides to him. There's one side that wants to save the world and one side that wants to take care of the people he loves. Those two collide, well, that's what you called a "tortured soul".

Brennan:
There's no such thing as a soul.

Aldo:
Says you, but Booth values nothing higher than his soul, yet he's willing to sacrifice his soul by killing Pelant.

Brennan:
Why?

Aldo:
[smirks] You, of course. It's always gonna come down to you.