A corrupt young man somehow keeps his youthful beauty eternally, but a special painting gradually reveals his inner ugliness to all.

Lord Henry Wotton: What are you?
Dorian Gray: I am what *you* made me! I lived the life that you preached... but never dared practice. I am everything, that you were too afraid to be.
Emily Wotton: I hope I'm not interrupting your reminiscence?
Lord Henry Wotton: One charm of the past, is that it's the past.
Emily Wotton: Hmm... I hope you're not also a dreary old cynic?
Dorian Gray: What is there to believe in?
Emily Wotton: Our developments.
Dorian Gray: All I see is decay.
Emily Wotton: For the religion.
Dorian Gray: Fashionable substitute for believe.
Emily Wotton: Art.
Dorian Gray: Formality.
Emily Wotton: Love.
Dorian Gray: An Illusion.
Lord Henry Wotton: Bravo!
Emily Wotton: Wow... you both cut the world to pieces, don't you? Thank you for the cigarette!
Dorian Gray: Unusual woman.
Lord Henry Wotton: She ought to be... she's my daughter.
Lord Henry Wotton: There's no shame in pleasure. Man just wants to be happy. But society wants him to be good. And when he's good, he's rarely happy. But when he's happy, he's always good.
Dorian Gray: [On a girl he saw, who just departed with a man] That was probably her husband.
Lord Henry Wotton: Yes, very sensible... People die of common sense, Dorian, one lost moment at a time. Life is a moment. There is no hereafter. So make it burn always with the hardest flame.
Lord Henry Wotton: The only way to get rid of a temptation, is to yield to it.
Lord Henry Wotton: I suggest we raise a little hell.
Lucius: I have the key to your heart.
Dorian Gray: [aggressively] Don't touch that ever!
Emily Wotton: Oblige me, Mr. Gray...
Dorian Gray: Have you been pursuing this delightful hobby for long?
Emily Wotton: No, it's a gift from my father. In return he made me promise that I wouldn't chain myself to any more railings.
[pause]
Emily Wotton: For suffrage, Mr, Gray. Well, don't you think that woman should be given the vote?
Dorian Gray: I don't believe a woman should be given anything she can't ware in the evening.
Emily Wotton: Hah, what a loss to the front you are. Think of all those Germans that you could bayonet with your Epigrams.
Dorian Gray: I do apologize if I offend.
Emily Wotton: Oh no, you'll have to do rather better to offend me.
Dorian Gray: Then I humbly vow to re-double my efforts.
[last lines]
Lord Henry Wotton: Poor boy. Who can bear to look at you now?
Dorian Gray: [trying to decline women and drink at a brothel] Well, perhaps I have a stronger conscience.
Lord Henry Wotton: [dismissively] 'Conscience.' It's just a polite word for 'cowardice.' No civilized man regrets a pleasure.