Marty: "Well, Doc, now we know who Clara is."
Doc: "Marty. It's impossible. The idea that I could fall in love at first sight is romantic nonsense. There's no scientific rationale for that."
Marty: "Awe, come on, Doc. It's not science. You meet the right girl, it just hits you. It's like lightning."
Doc: "Marty, please don't say that!"