He wrote a book. If I say he wrote a book, it's not because I want you to read the book. It's because the book is going to be on the exam. And that book is called The Wealth of Nations. And what Adam Smith argues for is a system of capitalism, of supply and demand, based on laissez-faire. Laissez-faire literally means hands off in French. So when you say laissez-faire, I can't help it.