Since 1991, he has been the head of the Design Zentrum Nordrhein Westfalen. During these years he has published books and compendia about the subject of design and he has accepted invitations to lecture all over the world.
He has been at the helm of Design Zentrum Nordrhein Westfalen since 1991, and in that time he has authored books and treatises on design, as well as traveled extensively to deliver lectures worldwide.