Sistine Chapel ceiling identity of the figures in the lunettes and spandrels, continue to defy interpretation. Modern scholars have sought, as yet unsuccessfully, to determine a written source of the theological program of the ceiling and have questioned whether or not it was entirely devised by the artist himself, who was both an avid reader of the Bible and a genius. Also of interest to some modern scholars is the question of how Michelangelo's own spiritual and psychological state is reflected in the iconography and the expression of the ceiling. One such speculation is that Michelangelo was tormented by conflict between homosexual desires
Sistine Chapel exterior can be seen only from nearby windows and light-wells in the palace. Subsidence and cracking of masonry such as must also have affected the Cappella Maggiore has necessitated the building of very large buttresses to brace the exterior walls. The accretion of other buildings has further altered the exterior appearance of the Chapel. The building is divided into three stories of which the lowest is a very tall basement level with several utilitarian windows and a doorway giving onto the exterior court. Internally, the basement is robustly vaulted to support the chapel. Above is the main space, the Sistine