AFI #001 Clark Gable as Rhett Butler from Gone with the Wind (1939)

Rhett: It seems we've been at cross-purposes, doesn't it? But it's no use now. As long as there was Bonnie, there was a chance that we might be happy. I liked to think that Bonnie was you, a little girl again, before the war, and poverty had done things to you. She was so like you, and I could pet her and spoil her, as I wanted to spoil you. But when she went, she took everything.
Scarlett: Oh, Rhett, Rhett please don't say that. I'm so sorry, I'm so sorry for everything.
Rhett: My darling, you're such a child. You think that by saying "I'm sorry," all the past can be corrected. Here, take my handkerchief. Never, at any crisis of your life, have I known you to have a handkerchief.
Scarlett: Rhett! Rhett, where are you going?
Rhett: I'm going to Charleston, back where I belong.
Scarlett: Please, please take me with you!
Rhett: No, I'm through with everything here. I want peace. I want to see if somewhere there isn't something left in life of charm and grace. Do you know what I'm talking about?
Scarlett: No! I only know that I love you.
Rhett: That's your misfortune. [turns to walk down the stairs]
Scarlett: Oh, Rhett! [watches Rhett walk to the door] Rhett! [runs down the stairs after him] Rhett, Rhett! Rhett, Rhett... Rhett, if you go, where shall I go? What shall I do?
Rhett: Frankly, my dear, I don't give a damn.

- Clark Gable as Rhett Butler from Gone with the Wind (1939)

The bolded line is ranked #1 in the American Film Institute's list of the top 100 movie quotations in American cinema.

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American Film Institute's list of the top 100 movie quotations

AFI #031 Vivien Leigh as Scarlett O'Hara from Gone with the Wind (1939)

I can't let him go. I can't. There must be some way to bring him back. Oh, I can't think about this now! I'll go crazy if I do! I'll think about it tomorrow. But I must think about it. I must think about it. What is there to do? What is there that matters? Tara! Home. I'll go home. And I'll think of some way to get him back. After all... tomorrow is another day!

- Vivien Leigh as Scarlett O'Hara from Gone with the Wind (1939)

The bolded line is ranked #31 in the American Film Institute's list of the top 100 movie quotations in American cinema.

AFI #059 Vivien Leigh as Scarlett O'Hara from Gone with the Wind (1939)

Scarlett O'Hara: As God is my witness, as God is my witness they're not going to lick me. I'm going to live through this and when it's all over, I'll never be hungry again. No, nor any of my folk. If I have to lie, steal, cheat or kill. As God is my witness, I'll never be hungry again.

- Vivien Leigh as Scarlett O'Hara from Gone with the Wind (1939)

The bolded line is ranked #59 in the American Film Institute's list of the top 100 movie quotations in American cinema.