In his legendary Pedagogical Sketchbook, Paul Klee takes a theoretical approach to drawing using geometric shapes and lines. Evincing a desire to reunite artistic design and craft, and written in a tone that oscillates between the seeming objectivity of the diagram, the rhetoric of science and mathematics, and an abstract, quasi-mystical intuition, Klee’s text expresses key aspects of the Bauhaus’ pedagogy and guiding philosophies. In this book, he presents his own theory about the relationships between line, shape, surface, and color in the visual space.