"There are no safeguards in human nature. We're wired to overreach. Look at history, all the countries that have ever ruled the world - Portugal, with its big, massive navy... All they've got now are salt cods and cheap condoms. And Brits? Now they're just sitting in their dank little island, fussing over their suits. No one's stopping and thinking, 'Hey, we're doing pretty well. We got France, we got Poland, we got a big Swiss bank account... You know what? Let's not invade Russia in the winter, let's go home, let's pop a beer and let's live off the interest.'"