""The Freemasons Reply To Pope Leo XIII"" is a book written by Melville Rosyn Grant that provides a response to the encyclical letter ""Humanum Genus"" issued by Pope Leo XIII in 1884. The letter condemned Freemasonry as a secret society that promoted atheism and moral relativism, and called on Catholics to avoid joining or supporting the organization. In his book, Grant argues that Freemasonry is not a threat to Christianity, but rather a society...