Ingrid Bergman as Maria from For Whom The Bell Tolls (1943)

Maria: I do not know how to kiss, or I would kiss you. Where do the noses go?

- Ingrid Bergman as Maria from For Whom The Bell Tolls (1943)

Happiness is ... (Ingrid Bergman)

Happiness is good health and a bad memory.

- Ingrid Bergman

AFI #028 Ingrid Bergman as Ilsa Lund from Casablanca (1942)

Ilsa: Play it once, Sam, for old times' sake.
Sam: I don't know what you mean, Miss Ilsa.

Ilsa: [whispered] Play it, Sam. Play 'As Time Goes By.'
Sam: Why, I can't remember it, Miss Ilsa. I'm a little rusty on it.
Ilsa: I'll hum it for you. [Ilsa hums two bars. Sam starts to play] Sing it, Sam.
Sam: [singing] You must remember this
A kiss is just a kiss
A sigh is just a sigh
The fundamental things apply
As time goes by.
Lyrics and Music by Herman Hupfeld (1931)

- Ingrid Bergman as Ilsa Lund from Casablanca (1942)

The bolded line is ranked #28 in the American Film Institute's list of the top 100 movie quotations in American cinema.