The document discusses Gestalt principles of visual organization, which were proposed by German psychologists in the early 1900s. The principles include figure/ground perception, proximity, similarity, good continuity, and closure. Proximity and similarity principles state that visually similar objects close together tend to be grouped together. Continuity principles suggest the eye perceives smooth, continuous shapes rather than abrupt changes. Closure principles indicate the eye sees complete shapes even when objects are not fully visible.