Rick: And the names of Mr. and Mrs. Victor Laszlo.
Ilsa: But why my name, Richard?
Rick: Because you're getting on that plane.
Ilsa: I don't understand, what about you?
Rick: I'm staying here with him until the plane gets safely away.
Ilsa: No, Richard, what has happened to you. Last night …
Rick: Last night we said a great many things. You said I was to do the thinking for both of us. Well I've done a lot of it since then and it all adds up to one thing. You're getting on that plane with Victor where you belong.
Ilsa: But Richard, no, I …
Rick: You've got to listen to me. Do you have any idea what you'd have to look forward to if you stayed here? Nine chances out of ten we'd both wind up in a concentration camp. Isn't that true, Louis?
Louis: I'm afraid Major Strasser would insist.
Ilsa: You're saying this only to make me go.
Rick: I'm saying it because it's true. Inside of us we both know you belong with Victor. You're part of his work, the thing that keeps him going. If that plane leaves the ground and you're not with him, you'll regret it. Maybe not today, maybe not tomorrow but soon and for the rest of your life.
Ilsa: What about us?
Rick: We'll always have Paris. If we didn't have, we lost it until you came to Casablanca. We got it back last night.
Ilsa: And I said I would never leave you.
Rick: And you never will. And I've got a job to do too. Where I'm going you can't follow and what I've got to do you can't be any part of. Ilsa, I'm no good at being noble, but it doesn't take much to see that the problems of three little people don't amount to a hill of beans in this crazy world. Some day you'll understand that.