As a Man Thinketh/Acres of Diamonds Author:James Allen, Russell Conwell The classic narrative, As a Man Thinketh, by James Allen, has been revised and updated by Paul J. Meyer, who says, "I have read this book more than 200 times... more than any other book. It played a key role in the development of my unlimited belief in myself and my Creator." Acres of Diamonds, by Russell Conwell, is ranked as one of the greates... more »t speeches of all time because of its implications for all those who hear it.« less