My favorite lines are delivered by Natalie Portman (Alice) and Clive Owen (Larry). In my pragmatic approach to love, they encapsulate it best.

A good fight is never clean. – Larry

Oh, as if you had no choice? There’s a moment, there’s always a moment, ‘I can do this, I can give into this, or I can resist it’, and I don’t know when your moment was, but I bet you there was one. – Alice

You women don’t understand the territory, because you are the territory. – Larry

I don’t want to lie. I can’t tell the truth. So it’s over. – Alice

You’ve ever seen a human heart? It looks like a fist, wrapped in blood! – Larry

You don’t know the first thing about love, because you don’t understand compromise. – Larry

Why is the sex so important? (Anna) Because I’m a fucking caveman! – Larry