This masterpiece is Bunuel at his best. It draws from the confrontational and revolutionary fire present in his Mexican films like "Il Brute", the intelligent and informed humor of his earlier religious farce, "Simon of The Desert", and I believe serves as a living picture of the transition his work seemed to under go between the more vivid and shocking Dali inspired surrealism of his early carrer (the obvious example being "Un Chien Andalou") and the more subtle and organic magical-realist influenced surrealism of "That Obscure Object of Desire". This film is certainly not light however. While there are no razor blindings or ant infested ears, the pope does fall victim to a firing squad of radicals. In fact I believe Bunuel succeds in leaving the viewer much more disgusted and upset by confronting him with the stark realities of the Catholic faith, and after all isn't that what surrealism is all about? It must be said that in order to understand and appreciate this film one must have a very good understanding of a variety of religious thinkers and of the history/practices of the catholic church. If you don't have such a background but are still lucky enough to get a chance to view this film, by all means take it, more likely than not it will inspire you to investigate the matter further and Bunuel conveniently mentions the names of all most all the writers he references in the film so take that list to a library, read up and watch it again, you won't be disappointed.