Mitchell, Chapter XXV (1936): “As God is my witness, as God is my witness, the Yankees aren’t going to lick me. I’m going to live through this, and when it’s over, I’m never going to be hungry again. No, nor any of my folks. If I have to steal or kill—as God is my witness, I’m never going to be hungry again.”
The film (1939): “As God is my witness, as God is my witness they’re not goin’ to lick me. I’m goin’ 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!”
The screen changes are real but small: “the Yankees” becomes “they,” “I’m never going to be” contracts to “I’ll never be,” “steal or kill” widens to “lie, steal, cheat or kill,” and “folks” loses its s. This is the same pattern as the film’s most famous line: Mitchell wrote “My dear, I don’t give a damn” and the screen added “Frankly.” The movie sharpened Mitchell; it did not write her.
Who did the sharpening cannot be pinned to one hand. Sidney Howard holds the sole screenplay credit and won a posthumous Academy Award for it, but producer David O. Selznick rewrote substantially and Ben Hecht, Jo Swerling, Oliver H. P. Garrett, Barbara Keon and John Van Druten all worked the script uncredited.