Brian Clarke (b. 1953) was born in Oldham, England. He is an architectural artist and painter, best known for radically updating and innovating the medium of stained glass. Clarke is also widely celebrated for his painting, sculpture, mosaic and tapestry.Hans Ulrich Obrist (b. 1968) is a world-renowned curator and the artistic director of the Serpentine Galleries in London. Alongside his curatorial practice, Obrist has written extensively on and around contemporary art, with a particular interest in the interview format.