Is there something called the Golden Rule in art?
There is a concept called the golden section, golden rectangle, or golden (divine) proportion, which is thought to have originated with the ancient Greeks, and developed more during the Italian Renaissance. It was and is applied to artistic principles, as well as other fields, such as architecture and design. The original idea was to create a principle of design and proportion based on a ‘divine’ rather than man-made notion. I have written more on this idea at: www.ndoylefineart.com/design2.html.