“You don’t have any balls?’ For once I wasn’t trying to be insulting.”

“My problem wasn’t that he was a vamp, or that he was gay. I didn’t like him because he was a politician.”

“But here, Ms. Pelletier, is the thing. Without infinitesimals, the calculus as we know and love it simply wouldn't exist. It is these nearly-zero, sort-of-zero, sometimes-zero quantities that allow us to understand the world. Something which seems to be nearly nothing turns out to be crucial to everything. So though I, or for you that matter, or any of us, may be, as a collection of atoms, practically indistinguishable from zero, this does not necessarily mean we are insignificant. Indeed, it may be that we are actually crucially important.”

“Yeah, well. You're my best friend, you know, and I love you.”

“if you wait for everyone else to do the right thing before you do the right thing, then you'll never do what's right. You have to do what's right even if other people aren't. Maybe even especially if other people aren't.”

“Do you know why I love mathematics?""Because it blew your mind for free when you couldn't get drugs?"Eccles snorted in surprise. "Well, yes, but there's another reason.”

“I feel like our whole friendship was a lie. She's probably the only person I've ever really opened up to, and the whole time she was hiding stuff from me. I just don't feel like I can trust somebody like that.”