The subject of the following analyses explains life and work of Johann, archduke of Styria. Beside reviewing the phases of his upbringing and his education, I am also going to describe his later legacy as a reformer and enlightened mind. Especially the Styrian Society of Agricul-ture and the founding oft the museum "Johanneum" in Graz are inseparably associated with the name of the "Styrian prince" and highlight his visions in particular. My knowledge on the subject is based upon Johanns own autobiographical accounts and some other scientific publications. The organization of this composition is historical.