The book is written by an engineering professor, who was once religious person. While the vast majority of people automatically and unquestioningly inherit their religion from their parents. he grew up little bit differently. he moved from one place to another where local beliefs were completely different from his. In this book, he is focusing mostly in his personal experience and opinion. He is hopeful that the book will enlighten broad readers. Not only for readers with Christianity and Islamic back grounds, but also all readers with other backgrounds: Judaism, Hinduism, Buddhism, Zoroastria, Sabia, Ismaili, Paganism, Shikhism, Shinto, Scientology and all other beliefs. Humanism is, as far as I know, one of the elements in every religion and belief. It is very thought provoking book.