He has produced over a hundred publications, including ten books; his bestselling Creativity in Business was named one of the nine “Greatest Business Books Ever Written” by Inc. magazine. The Creative Spirit, which he coauthored with Daniel Goleman and Paul Kaufman, was the companion book to the PBS series of the same name. He lectures and consults to organizations and groups worldwide and has served as a director of a major retailer, a food company, a catalog company, a start-up airline, a national cable systems company, an advertising agency, and four nonprofit organizations.