A pair of distinguished scholars identifies and analyzes secret messages encoded within the Sistine Chapel's ceiling fresco, revealing how the master Renaissance artist imparted messages of brotherhood, tolerance, and revolution to interfaith free-thinkers and Kabbalists from his period. Reprint. The Shocking Secrets of Michelangelo's Sistine Chapel Artwork The recent cleaning of the Sistine Chapel frescoes removed layer after layer of centuries of accumulated tarnish and darkness. The Sistine Secrets endeavors to remove the centuries of prejudice, censorship, and ignorance that blind us to the truth about one of the world's most famous and beloved art treasures.