Rudolf Arnheim has been known, since the publication of his groundbreaking _Art and Visual Perception_ in 1974, as an authority on the psychological interpretation of the visual arts. Two anniversary volumes celebrate the landmark anniversaries of his works in 2009. In _The Power of the Center_, Arnheim uses a wealth of examples to consider the factors that determine the overall organization of visual form in works of painting, sculpture, and architecture. _The Dynamics of Architectural Form_ explores the unexpected perceptual consequences (...) of architecture with Arnheim's customary clarity and precision. (shrink)