How to Win Friends and Influence People

How to Win Friends and Influence People is just as useful today as it was when it was first published, because Dale Carnegie had an understanding of human nature that will never be outdated. It was an overnight hit, eventually selling 15 million copies. Financial success, Carnegie believed, is due 15 percent to professional knowledge and 85 percent to "the ability to express ideas, to assume leadership, and to arouse enthusiasm among people."