If you want to learn why the things are seen in the way they are seen or want to control the look of your objects to build up as a concrete whole, wheter in a motion picture, a paint, a photograph, architecture, sculpture, a graphical design piece, or more strictly speaking, if you ever asked yourself what is a line, what makes a triangle more interesting than a square, why my piece of design looks unstable, and start to think that you are going mad :) this is the decisive beginning for understanding visual communication... Must be bought together with "The Power of the Center" for a complete look... Basics of geometry, psychology, philosophy and history of art are required...