Hilma af Klint: Tree of KnowledgeRevelatory and sublime Her work remains conceptually open enough for viewers to draw their own conclusions, insert their own meaning and feel transported to other glorious worlds. The New York Times One of the most inventive artists of the twentieth century, Hilma af Klint was a pioneer of abstraction. Her first forays into her imaginative non objective painting long preceded the work of Kandinsky and Mondrian and radically mined the fields of science