- Paula Novoa Pazos: [to her teacher] If we're not supposed to use weapons, why did you have a real gun in your room?
- Iván Noiret León: I have to start thinking what I'll give you for Mother's Day. I got it. How about a straightjacket?
- Carolina Leal Solís: I don't care what you say. You're blind, and because of you we could all end up dead.
- Jacques Noiret: In what gym did you get your title?
- Hugo Alonso: Title? No, what they give you are colored belts, and mine's black.
- Jacques Noiret: Well, put it on, 'cause we can see your underwear.
- Jacques Noiret: Get down to the passages. The alarm went off. It's the kids. We have to capture them.
- Jacinta García: Where the devil did you put the knives?
- María Almagro: Under my bed so no one will take them from me.
- Paula Novoa Pazos: [voiceover] Violence is something very bad that happens when you take a child's chewing gum and he gets upset and hits you in the eye with his slingshot. Then you hit him harder, and that's how a world war starts - or worse. In a war, people hurt themselves with guns, bombs, even sweaty sneakers. No one wants to score goals or eat chewing gum, because everyone is upset.