Your man may as well be an orchidist with how much he cherry picks. The main arguments are that the western interpretation of the bible, post reformation, laid the foundation for western imperial superiority. In spite of some interesting historical accounting and extremely biased anecdotal arguments it come across as a colonial apologist rather than a humanitarian. I read this book hoping to get some insight into the history and there was a little of that but it was ultimately disappointing. There was a rather ridicules and seemingly wilful argument attempting to say that the theory of evolution is false because it can’t explain why rapists don’t use music, because music is suggested to be a mechanism of sexual selection. All in all I was very disappointed in this rather confused and poorly put together book, it had some interesting history but it was ultimately not worth the effort.