Gigi: Do you make love all the time?
Gaston Lachaille: I beg your pardon?
Gigi: Do you make love all the time, Gaston?
Gaston Lachaille: Certainly not! The only people who make love all the time are liars.

Gigi: Why did he fly off the handle? He knew I'd answer him back.

Gaston Lachaille: [about Liane d'Exelmans] What do you think of her?
Gigi: She is... common!
Gaston Lachaille: Common? What, you mean "ordinary" common or "coarse" common?
Gigi: Ordinary common... and coarse!
[leaves]

Gaston Lachaille: [Gaston speculates on the unfaithfulness of his mistress Liane] She's so gay tonight / She's like spring tonight / She's a rollicking, frolicking thing tonight / So disarming, soft and charming / She is not thinking of me / No, she's not thinking of me! In her eyes tonight / There's a glow tonight / They're so bright they could light Fountainbleu tonight / She's so gracious, so vivacious / She is not thinking of me! Bless her little heart / Crooked to the core / Acting out a part / What a rollicking, frolicking bore! She's such fun tonight / She's a treat tonight / You could spread her on bread, she's so sweet tonight / So devoted, sugar-coated / That it's heart-warming to see / Oh, she's simmering with love / Oh, she's shimmering with love / Oh, she's not thinking of me! She is not thinking of me! / Someone has set her on fire / Is it Jacques? Is it Paul or Leon? / Who's turning her furnace up higher? / Oh she's hot, but it's not for Gaston! Oh, she's gay tonight / Oh, so gay tonight / A gigantic, romantic cliché tonight / How she blushes, how she gushes / How she fills me with ennui! / She's so ooh-la-la-la-la, so UNTRUE-la-la-la-la / Oh, she's not thinking of me!

Gaston Lachaille: [singing] Oh Gigi! While you were trembling on the brink was I out yonder somewhere blinking at a star? / Oh Gigi! Have I been standing up too close or back too far? / When did your sparkle turn to fire, / And your warmth become desire? / Oh what miracle has made you the way you are? Gigi! Gigi! Gigi! Oh no! I was mad not to have seen the change in you! Oh, Gigi!

Gaston Lachaille: [singing] She's a babe! / Just a babe! / Still cavorting in her crib / Eating breakfast with a bib / with her baby teeth / and all her baby curls! / She's a tot! / Just a tot! / Good for bouncing on your knee! / I am positive that she / doesn't even know that boys aren't girls! / She's a snip! / Just a snip! / Making dreadful baby noise, / having fun with all her toys! / Just a chickadee who needs a mother hen! / She's a cub, a papoose! / You could never turn her loose! / She's too infantile to take her from her pen! / Of course, that weekend in Trouville, / in spite of all her youthful zeal, / she was exceedingly polite / and on the whole a sheer delight. / And if it wasn't joy galore, / at least not once was she a bore, / that I recall. / No, not at all... / Ah, she's a child! / A silly child! / Adolescent to her toes / and good Heaven how it shows / Sticky thumbs are all the fingers she has got! / She's a child! / A clumsy child! / She's as swollen as a grape / and she doesn't have a shape / where her figure ought to be, / It is not! / Just a child! / A growing child / that's so backward for her years, / if a boy her age appears / I am certain he will never call again! / She's a scamp and a brat, / doesn't know where she is at, / unequipped and undesirable to men! / Of course, I must confess / that in that brand new little dress, / she looked surprisingly mature / and had a definite allure. / It was a shock in fact to me, / the most amazing shock to see / the way it clung / on one, so young! / She's a girl, / a little girl! / Getting older, it is true, / which is what they always do / till that unexpected hour / when they blossom like a flower! Oh, no! Oh, no! But... but... there's sweeter music when she speaks, isn't there? / Could I be wrong? Could it be so? / Oh where, oh where did Gigi go? / Gigi! Am I a fool without a mind or have I merely been too blind to realize? / Oh Gigi! Why you've been growing up before my very eyes / Gigi! You're not at all that funny, awkward little girl, I knew / oh no! Overnight there's been a breathless change in you...

Gaston Lachaille: I brought you some caramels.
Gigi: Thank you, Gaston.
Madame Alvarez: Gaston, you spoil her so.
Gaston Lachaille: The champagne is for you.
Madame Alvarez: You spoil me too.

Gaston Lachaille: I must consider my next move very carefully. All of Paris is watching me.
Madame Alvarez: Gaston, what are you talking about? The whole world is watching you!

[Aunt Alicia proudly displays a dazzling emerald from her collection]
Gigi: Who gave it to you, Aunt?
Aunt Alicia: A king!
Gigi: A great king?
Aunt Alicia: No, a little one. Great kings do not give very large stones.
Gigi: Why not?
Aunt Alicia: In my opinion it's because they don't feel they have to.
Gigi: Well, who does give the valuable jewels?
Aunt Alicia: Who? Oh the shy, the proud, and the social climbers, because they think it's a sign of culture. But it doesn't matter who gives them, as long as you never wear anything second-rate. Wait for the first-class jewels, Gigi. Hold on to your ideals.

[discussing Gigi's lessons with Aunt Alicia]
Madame Alvarez: Last week she taught her to eat cold lobster to perfection.
Gaston Lachaille: What in heaven's name for?
Madame Alvarez: She says it's extremely useful.