..."The stock market just offers you so many opportunities, thousands and thousands of different businesses. You don't have to be an expert on every one of them. You don't need to be an expert on 10 percent of them even. You just have to have some conviction that either a given company, or a group of companies ... are likely to make more money five or 10 or 20 years from now than they're earning now. And that is not a difficult decision to come to."