bThe only book to spotlight the sensational Swedish artist Hilma af Klint's groundbreaking, gorgeous iTree of Knowledgei series in its entiretyb pbRevelatory 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. --iTheii New York Timesib p 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 and religion. Deeply interested in spiritualism and philosophy, af Klint developed an iconography that explores esoteric concepts in metaphysics, as demonstrated in iTree of Knowledgei. This rarely seen series of watercolors renders orbital, enigmatic forms, visual allegories of unification and separateness, darkness and light, beginning and end, life and death, and spirit and matter