William Cohen, Ph.D., president of the Institute of Leader Arts, was the first graduate of Drucker’s executive Ph.D. program. About him, Drucker wrote: “My colleagues on the faculty and I learned at least as much as we could teach him.” Cohen served as major general in the U.S. Air Force Reserve, has held executive positions in several companies, and was president of two universities. He is the author of many management books, including The Art of the Leader and A Class With Drucker.

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