You see, the great secret, Eliza, is not a question of good mann...
Professor Henry Higgins: You see, the great secret, Eliza, is not a question of good manners or bad manners, or any particular sort of manners, but having the same manner for all human souls. The question is not whether I treat you rudely, but whether you've ever heard me treat anyone else better.
Eliza Doolittle: I don't care how you treat me. I don't mind your swearing at me. I shouldn't mind a black eye; I've had one before this. But I won't be passed over!
Professor Henry Higgins: Well then, get out of my way, for I won't stop for you. You talk about me as though I were a motor bus.
Eliza Doolittle: So you are a motor bus! All bounce and go, and no consideration for anybody. But I can get along without you. Don't you think I can't!
Professor Henry Higgins: I know you can. I told you you could.
Professor Henry Higgins: [quietly] You've never wondered, I suppose, whether... whether I could get along without you.
Eliza Doolittle: Well, you have my voice on your phonograph. When you feel lonesome without me you can turn it on. It has no feelings to hurt.
Professor Henry Higgins: I... I can't turn your soul on.
Eliza Doolittle: Ooh, you are a "devil". You can twist the heart in a girl the same way some fellows twist her arms to hurt her!