Start:

GALLIMARD: They say in opera the voice is ever thin. That's probably why I'd never before enjoyed opera . Here . . . here was a Butterfly with little or no voice--but she had the grace, the delicacy . . . . I believed this girl. I believed her suffering. I wanted to take her in my arms--so delicate even I could protect her, take her home, pamper her until she smiled.

[... … …]

End:

GALLIMARD: Yes . . . well ... I see your point ...

SONG: I will never do Butterfly again, Monsieur Gallimard. If you wish to see some real theatre, come to the Peking Opera sometime. Expand your mind.

(Song walks offstage)

GALLIMARD (To us): So much for protecting her in my big Western arms....

For the full scene, see the script edition cited here: David Henry Hwang, M. Butterfly, Penguin Books,