What a truly amazing book. Very very long book covering so many topics in real depth. Clearly shows that church dogma has cost mankind 15 centuries of progress in science and medicine. Many hundreds of thousands of people died needlessly for religious based superstition. This book should be the basis of a 10 part TV series. It is no wonder I have lost all respect for religion, this book confirmed my worst fears. The sad part is the book was written over 120 years ago and the world still embraces religions as a source of truth.