Maria: I am not finished yet, Captain!
Captain Von Trapp: Oh yes you are, Captain! Fraulein, you will pack your things this minute and return to the Abbey.
Maria: You know how Sister Berthe always makes me kiss the floor after we've had a disagreement? Well, lately I've taken to kissing the floor whenever I see her coming, just to save time.
Maria: When the Lord closes a door, somewhere He opens a window.
Maria: Kurt, how are you?
Kurt: Hungry.
The Baroness: My dear, is there anything you can't do?
Maria: Well, I'm not sure I'll make a very good nun.
The Baroness: If you have any problems, I'll be happy to help you.
Max: Hold on. What's so funny?
Captain von Trapp: You are, Max. Expensive, but very funny.
Frau Schmidt: The Von Trapp children don't play. They march.
The Baroness: Somewhere out there is a lady who I think will never be a nun. Auf Wiedersehen, darling.
Captain von Trapp: Fraulein, is it to be at every meal, or merely at dinnertime, that you intend on leading us all through this rare and wonderful new world of... Indigestion?
Max: How many have I had?
Maid: Two.
Max: Make it an uneven three.
Captain von Trapp: Oh, there's nothing wrong with the children. Only the governesses.
Mother Abbess: Maria, these walls were not meant to shut out problems. You have to face them. You have to live the life you were born to live.
Answer: Postulants/Novices, such as Maria, were forbidden from singing in the Abbey. However, these rules did not necessarily apply to the sisters who are singing. In addition, it's a musical, and the nuns weren't "really" singing. Their complaints about Maria are simply put into a song.