Wallace D. Wattles, mentor of Napoleon Hill, Dale Carnegie, Rhonda Byrne: The Science of Getting Rich
https://www.youtube.com/watch?v=IlZpZH8eatI&list=PLVUV0yRnJggXcv4k3YCwYM43gJb9spvip&index=3
https://www.youtube.com/watch?v=_CGNcyrjkN8&list=PLVUV0yRnJggXcv4k3YCwYM43gJb9spvip&index=1