The Parsifal Stories - by Trevor Bentley In this book you can see how a coaching master, the wizard Parsifal from Arthurian legend, works with this art form. Often it seems there's a touch of magic as Parsifal works with the CEO and executive team, King Arthur and his courtiers. by Trevor Bentley. Executive coaching as an art form combines a lifetime of experience, an understanding of psychology and wisdom. Parsifal Stories is published bythe space betweenand retails for $40 (plus GST if applicable) and can be supplied by mail for the cost of postage. To order go to: Book order. We'll contact you via email to arrange postage and invoicing.