Alicia: How big is the universe? Nash: Infinite. Alicia: How do you know? Nash: I know because all the data indicates it's infinite. Alicia: But it hasn't been proven yet. Nash: No. Alicia: You haven't seen it. Nash: No. Alicia: How do you know for sure? Nash: I don't, I just believe it. Alicia: It's the same with love I guess.