Aw, come on, Doc. It's not science. You meet the right girl, it just hits you. It's like lightning.

Marty Mcfly (Michael J. Fox)

5 seconds sound clip from the Back to the Future Part III movie soundboard.

You can hear this line at 00:37:09.352 in the DVD version of the movie.

Quote context

[...]

- Excuse me, Emmett. Do you remember last week at the town meeting when you volunteered to meet the new schoolteacher at the station when she came in?

- Oh, yes, quite so.

- Well, we just got word she's coming in tomorrow.

- Here are the details for you. Thanks for all your help.

- Anytime, Hubert.

- Oh! Her name's Miss Clayton. Clara Clayton.

- Well, Doc, now we know who Clara is.

- 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 concept.

- Aw, come on, Doc. It's not science. You meet the right girl, it just hits you. It's like lightning.

- Marty, please don't say that.

- That's the way it was for me and Jennifer. I mean, we couldn't keep our eyes off each other.

- God, Jennifer, damn. I hope she's all right, Doc. I can't believe we just left her there on the porch.

- Don't worry, Marty. She'll be fine.

- When you burned the almanac in 1955, the normal timeline was restored.

[...]