“- Mr. Snelgrove: What's the meaning of this, Peggy Sue?
- Peggy Sue: Well, Mr Snelgrove, I happen to know that in the future I will not have the slightest use for algebra, and I speak from experience.”

Ken Grantham - Mr. Snelgrove
Kathleen Turner - Peggy Sue

- Conrad "Con" Jarrett: I made a 74 on a trig quiz.
- Beth Jarrett: Oh really? Gosh I was awful at trig.
- Conrad "Con" Jarrett: Oh. Really? You took trig?
- Beth Jarrett: No... wait a minute... ha, did I take trig? Huh... anyway, I bought you two shirts, they're on your bed.
Timothy Hutton - Conrad
Mary Tyler Moore - Beth

“Mathematics is a language. It's very difficult. It's subtle. You couldn't say those things any other way - and I can talk to dead people with it. I talk to Copernicus every day.”
Matthew Broderick - Richard Feynman

“So this is a Harvard bar? I thought there'd be equations and shit on the wall.”
Ben Affleck - Chuckie Sullivan

“- Ginny: Is that a new watch?
- Robert Green: Ya, dual time zones: tells the time in two places.
- Ginny: What for?
- Robert Green: So if I'm in L.A. and want to know the time in New York I don't have to go through the anguish of adding three.”
Kathleen Wilhoite - Ginny
Alec Baldwin - Robert Green