Karen Richards: Where were we going that night, Lloyd and I? Funny, the things you remember and the things you don't.

Margo Channing: Margo Channing is ageless - spoken like a press agent.
Lloyd Richards: I know what I'm talking about. After all, they're my plays.
Margo Channing: Spoken like an author. Lloyd, I'm not twenty-ish, I'm not thirty-ish. Three months ago I was forty years old. Forty. Four O. That slipped out. I hadn't quite made up my mind to admit it. Now I suddenly feel as if I've taken all my clothes off.

Margo Channing: Peace and quiet is for libraries!

Margo Channing: She thinks only of me, doesn't she?
Birdie: Well, let's say she thinks only about you, anyway.
Margo Channing: How do you mean that?
Birdie: I'll tell you how: like... like she's studying you, like you was a play or a book or a set of blueprints - how you walk, talk, eat, think, sleep...
Margo Channing: I'm sure that's very flattering, Birdie. I'm sure there's nothing wrong with it.

Margo Channing: So many people know me. I wish I did. I wish someone would tell me about me.
Karen Richards: You're Margo, just Margo.
Margo Channing: And what is that, besides something spelled out in light bulbs, I mean - besides something called a temperament, which consists mostly of swooping about on a broomstick and screaming at the top of my voice? Infants behave the way I do, you know. They carry on and misbehave - they'd get drunk if they knew how - when they can't have what they want, when they feel unwanted or insecure or unloved.

Margo Channing: You're not much of a bargain, you know. You're conceited and thoughtless and messy.

Addison DeWitt: Is it possible, is it even conceivable, that you've confused me with that gang of backward children you play tricks on?

Addison DeWitt: There never was, and there never will be, another like you.

Addison DeWitt: We all come into this world with our little egos equipped with individual horns. If we don't blow them, who else will?

Addison DeWitt: We all have abnormalities in common. We're a breed apart from the rest of humanity, we theatre folk. We are the original displaced personalities.