Maybe I am being too harsh with this review, but as I mentioned in my review of Insights Into Islamic Esoterism and Taoism, Guenon does not hold up to scrutiny, reading him can be like listening to ramblings of an old Sheikh, but he has no concern for modern convention and would probably be happy with me describing him this way. Speaking of which, that book was very useful for understanding this one. Insights Into Islamic Esoterism and Taoism focuses on Guenon's distinction between an exoteric and an esoteric (as he understands these terms) aspect of a given tradition. This perspective on tradition is then central to this discussion, not only because esoterism is in the title here, but also because a lot of the book is a criticism of Christianity and this criticism relies on understanding of religious tradition as consisting of an exoteric and esoteric aspect. According to Guenon, Christianity is lacking compared to other religions. Concerning the exoteric aspect, Christianity lacks originality here and lacks connection with its spiritual predecessors (Judaism). Instead societies where Christianity established itself continued the exoteric, governing, law making aspect of previous religions, mainly of Roman society, tradition and religion. Esoteric aspect isn't much better. A lot of what initially had greater esoteric importance become mundane religiosity and so a lot of ancient traditional wisdom was lost. Initiation rights and deeper spiritual thought were more preserved in the priesthood, but even there focus on esoteric aspect and when people wanted to focus more on it, through mystical practices or establishment of orders, it was more through innovation than tradition which Guenon of course sees as negative. He does point out, however that Eastern Christianity is in better condition through maintenance of practices such as hesychasm, even not considering things in the West like further schisms. Through the book he also talks about mystical aspect of either dogma or of folk beliefs, but he sees both as remnants of older traditions which means they have value, but are also a reflection of a sad state of the religion, being a corruption of something older. I thought this was good or at least extremely interesting criticism and it really made me think about the nature of Christianity. But it is mainly focused in the first half. The second half of the book is more rambly and discusses various things in Christianity through the lens which was carved in the first half of the book. So I very much enjoyed this book and think there's a lot of things of value, but there is room for criticism, most of it carrying over from "Insights Into Islamic Esoterism and Taoism", and the second half just being less enjoyable, especially compared to the groundbreaking first half, brings it down a star.