 The late Thomas Leonard, who founded or helped found Coach U, the International Coach Federation, Coachville, the International Association of Coaches and the Coaches Training Institute, was an employee of est.Sociologist and Professor Earl Babbie acknowledged the value that he got out of his work with Werner Erhard.As Babbie says "I want to thank Werner Erhard for all the value I've gotten from my association with him, especially as it was reflected in the writing of this book" (Society By Agreement, which at the time was a widely used introductory sociology textbook in the United States).