Mary: Blessed are the forgetful, for they get the better even of their blunders.
[they click glasses]
Mary: Nietzsche. Beyond Good and Evil. Found it in my Bartlett's.

Mary reads to Dr. Mierzwiak out of "Bartlett's Familiar Quotations"; the lines are from Alexander Pope's poem "Eloisa to Abelard"
Mary: How happy is the blameless Vestal's lot! / The world forgetting, by the world forgot / Eternal sunshine of the spotless mind! / Each pray'r accepted, and each wish resign'd.

Clementine: Joel, I'm not a concept. Too many guys think I'm a concept or I complete them or I'm going to make them alive, but I'm just a fucked up girl who is looking for my own peace of mind. Don't assign me yours.
Joel: I remember that speech really well.
Clementine: I had you pegged, didn't I?
Joel: You had the whole human race pegged.
Clementine: Probably.
Joel: I still thought you were going to save me. Even after that.

Clementine: Let me show you something... come on...
Joel: I think I heard a crack.
Clementine: It's not gonna crack, or break, or... it's so thick!... Show me which constellations you know.
Joel: Um... oh... I don't... know any.
Clementine: Show me which ones you know!
Joel: Okay... okay... oh! There's Osidius.
Clementine: Where?
Joel: Right there... see? Sort of a swoop and a cross, Osidius the Emphatic.
Clementine: You're full of shit, right?
Joel: Nope. Osidius, right there, swoop and cross.
Clementine: Shut the fuck up!

Joel: I could die right now, Clem. I'm just... happy. I've never felt that before. I'm just exactly where I want to be.

[as Joel and Clementine eat out, he thinks about the other glum-looking couples in the restaurant:]
Joel: Are we like couples you see in restaurants? Are we the dining dead?

Clementine: Sometimes I don't think people realize how lonely it is to be a kid.

Joel: I can't remember anything without you.
Clementine: That's sweet, but try.

Joel: I think your name is magical.

Clementine: I wish you'd stayed.
Joel: I wish I'd stayed, too. NOW I wish I'd stayed. I wish I'd done a lot of things. I wish I'd... I wish I'd stayed... I do.

Clementine: I'm gonna marry you... I know it!
Joel: Ummm... okay...

Clementine: Wish me a happy Valentine's Day when you call. That'd be... nice!

Clementine: I would like you to call me. Would you do that? I'd like it.

[Joel calls Clem on the telephone]
Clementine: What took you so long?
Joel: I just walked in.
Clementine: Do you miss me?
Joel: Oddly enough, I do!
Clementine: You said "I do" - I guess that means we're married!
Joel: I guess so!

Clementine: You don't tell me things, Joel. I'm an open book. I tell you everything, every damn, embarrassing thing.

Clementine: Joely?
Joel: Yeah Tangerine?
Clementine: Am I ugly?
Joel: Uh-uh.
Clementine: When I was a kid, I thought I was. I can't believe I'm crying already. Sometimes I think people don't understand how lonely it is to be a kid, like you don't matter. So, I'm eight, and I have these toys, these dolls. My favorite is this ugly girl doll who I call Clementine, and I keep yelling at her, "You can't be ugly! Be pretty!" It's weird, like if I can transform her, I would magically change, too.
Joel: [kisses Clementine] You're pretty.
Clementine: Joely, don't ever leave me.
Joel: You're pretty... you're pretty... pretty...

Mary: Adults are like a combination of sadness and phobias.

Clementine: Joely? What if you stay this time?
Joel: I walked out the door. There's no memory left.
Clementine: Come back and make up a goodbye at least, let's pretend we had one... Goodbye, Joel.
Joel: ...I love you...
Clementine: ...Meet me in Montauk...

Joel: I don't see anything I don't like about you.
Clementine: But you will! But you will, and I'll get bored with you and feel trapped, because that's what happens with me.
Joel: Okay.

[last lines]
Clementine: Okay.
Joel: Okay.