[David Zwirner Books] The first detailed survey of Swedish artist Hilma af Klint’s groundbreaking Tree of Knowledge series “Revelatory 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, af Klint was a pioneer of abstraction. Her first forays into nonobjective painting preceded the work of Kandinsky and Mondrian and radically mined the fields of science and religion. Deeply interested in spiritualism and philosophy, af Klint developed an iconography that explores esoteric concepts in metaphysics, as demonstrated in Tree of Knowledge. This rarely seen series of works on paper renders orbital, enigmatic forms, visual allegories of unification and separateness, darkness and light, beginning and end, life and death, and spirit and matter. Published on the occasion of the exh