Zwei Licht-Prismen by Heinz Mack, 2002. Vaduz, Lichtenstein. Photo : Augustina Zeya “They are the dreams that one dreams when light sleeps with matter.” Heinz Mack I remember the moment clearly: a hot August afternoon in Vaduz, the Alpine air shimmering, when I first came upon Heinz Mack’s Zwei Licht-Prismen ... two tall, triangular stelae that caught the sun and seemed to split it into coloured atmospheres. Standing before them I felt a peculiar mixture of astonishment and