"In every chapter of this book, mention has been made of the mon making secret which has made fortunes for hundreds of exceedingly wealthy men whom I have carefully analyzed over a long period of years. "The secret was brought to my attention by Andrew Carnegie, more than half a century ago. The canny, loveable old Scotsman carelessly tossed it into my mind when I was but a boy... When he saw that I had grasped the idea, he asked if I would be willing to spend twenty years or more preparing myself to take it to the world.I aid I would, and with Mr. Carnegie's cooperation, I have kept my promise. "It was Mr. Carnegie's idea that the magic formula which gave him a stupendous fortune, ought to be placed within reach of people who do not have time to investigate how men make money, and it was his hope that I might test and demonstrate the soundness of the formula through the experience of men and women in every calling. He believed the formula should be taught in all public schools and colleges, and expressed the opinion that if it were properly taught, it would so revolutionize the entire educational system that the time spent in school could be reduced to less than half."