晝夜奔馳

Bones: I am improving. I am quite strong.
Booth: Yeah, well you've always been quite strong.
Bones: You know the difference between strength and imperviousness, right? ... A substance that is impervious to damage doesn't need to be strong. When you and I met I was an impervious substance, now I am a strong substance. ... A time could come when you aren't angry anymore and I'm strong enough to risk losing the last of my imperviousness, maybe then we could try to be together.