You can become an alcoholic working in an office in Los Angeles. It's very easy to say because I do this shameful job I take drugs or drink, but the real reason prostitutes take drugs and drink is because prostitution is a party area. It's not about desperation, it's the surroundings.

La Zona is such a closed area, a dangerous, outlaw area. My time in the Zona was a time outside of society, almost out of the real world. And the girls there had such a sense of irony and sarcasm. They were also really interested in my film. They'd be like, "Thank God we live in Mexico, because our kind of prostitution has a heart. We wouldn't want to sit behind a glass cage or be sold by our own mothers. We have free will."

Sometimes the presence of a camera is like opening a door.

I had to first convince them [prostitutes] that I wasn't a journalist who would yet again put out a notion about them they wouldn't necessarily care for or who would victimize them. You know, journalists come and go. If they come twice, it's a lot. But I come 10 times and hang out with them and share stuff. If you connect with someone just once, that's something. But if you can connect twice, that's something else.

In Bangladesh a prostitute normally wouldn't even undress for a man. He pays, she pulls up her sari, and he's done in 20 seconds.

I think beauty is the splendor of truth, so if the people I portray think they're beautiful, they're beautiful. I don't make them that way.

It's interesting because the Thai king says there's no prostitution in Thailand, it doesn't exist, so the prostitutes don't pay taxes. They can work other jobs if they want and put away money, maybe leave when they're 40.