Thoughful, informative and educational
The Painter's Secret Geometry by Charles Bouleau was a delightful eye opener to any artist who wants to know how to compose a composition in art.
He covers and demonstrates with plates and text, the centuries of past artists tastes for mastering the golden means, and other pertinent compositional schemes.
This is not a how to book but a thought provoking one that those who inquire into it for historical and scientific endeavors.