" If you want to be relevant only in your household, then you only need to know the things that are important in your house, and if you want to be relevant in your neighborhood, you need to know what's important in your neighborhood. The same thing applies to your city, state, and country. And if you want to be relevant to the entire world, program that computer known as your brain with all kinds of information from everywhere in order to prepare yourself. "

― Ben Carson , One Nation: What We Can All Do to Save America's Future