- Nadie: I can travel through time. I come from the past, a few days ago I was in the '80s, I'm not kidding.
- Rafael: That's odd.
- Nadie: What thing?
- Rafael: Time travelers often come from the future.
- Nadie: Oh, you already met others.
- Rafael: No, I mean... They come from an apocalyptic future to fix their time.
- Nadie: That absurd version assumes that the future can be changed.
- Nadie: For all we know, we could be entering a parallel world every time we wake up. If our life was going to be different than it is, we'll never know.
- Nadie: Do you think someone will be able to make a time travel machine? If they had, the world would already be ruined. You have to be clear on one thing, man. Everything that's happening has already happened and will happen, if something changes, it's because that's how it had to be.
- Rafael: His name is Nobody, as Ulysses when he escapes from the Cyclops in The Odyssey. Like Captain Nemo in Verne's book. Without a mask he'd be somebody, but nameless and faceless, he's nobody. He must wear a mask to be unrecognizable, so they don't know he's the crazy one who escaped. In his head it must have been a good idea.
- Nadie: Phones are getting smarter and people less so. It's not even that they talk on the phone, they write. I mean, in the '80s the phones were for talking.
- Nadie: Each night... you have to hit the sack having learned something new. And I'm not just talking about what they teach you at school. You have to learn many more things. Learn to... change the wheel of a car, learn to fix a toilet, learn martial arts. How things work, how an engine works, how an airplane flies, how a revolver is fired, how the mechanism of a lock is. Everything that happens in the world.
- Nadie: Novikov's self-consistency principle indicates that it's impossible for a sequence of events to cause a paradox. Everything that has to happen has already happened and will happen.
- Nadie: That's how the world is, everyone's crazy, and they want us to think that we are the crazies. The world is full of people talking to themselves, who are depressed, who lie compulsively, who have addiction to work, to gamble or to watch soccer games. And yet they are normal. Can you see what I mean? We're all crazy. What matters is what kind of crazy you are, those who have fun without disturbing the rest or the other kind?
- Nadie: You don't know how good it's to wear a mask because you never did; people around you do two things: they stare at you or they don't look at you at all. And once you can accept this, you no longer have problems with anyone. You can do what you want without caring what others think.