"Am I supposed to live here?" Matt asked. Tam Lin Started . "Ah! My mind was wandering. I love the way swallows turn just before they're about into the ground. No, lad. You wouldn't be able to survive. It's better if you go to Aztlán."
Tam Lin unzipped a pocket in the backpack and took out a clump of paper. "This is money, see. I should have taught you about it before Here's a hundred-peso note and here's a fifty. Always ask the price of something first and offer half. Oh, crikey! You're not going to learn it now. Just remember to take out one piece of paper at a time and don't let anyone see how many pieces of paper you have."
Tam Lin climbed through the rock and went off into the gathering dark. He didn't look back. Matt kept himself from shining the flashlight on him.