The present volume, first published at the close of World War II, and based on a series of articles on initiation originally written between 1932 and 1938 for Le Voile d'Isis (later renamed Études Traditionnelles), is unique in giving a comprehensive account both of the conditions of initiation and of the characteristics of organizations qualified to transmit it. Guénon's distinction between the initiatic and the mystical paths-the first requiring a formal relationship with a master, a set of specific contemplative techniques, and a chain-of-transmission stretching back to the origin of the tradition in question, the second generally lacking these elements-led to some controversy between those who accept this distinction and others who believe that initiatory and mystical spirituality are one and the same. The book presents such central principles as the dangers and barrenness of syncretism, the often dire consequences of fostering 'psychic powers', and the superiority of sacerdotal initiation (into the Greater Mysteries) over 'royal' initiation (into the Lesser Mysteries), though both are necessary parts of the initiatic path. This last point precisely defines the rift between Guénon and Julius Evola, whose elevation of royal initiation over sacerdotal must be seen, according to Guénon's criteria, as a modern-day echo of the ancient revolt of the warrior caste against the priestly one. Whoever follows Guénon's argument will realize that a romantic warrior mysticism held no fascination for him, and is in fact explicitly contrary to his principles. But pre-eminently, Perspectives on Initiation provides indispensable points of reference for anyone attempting to distinguish between 'initiatic', 'pseudo-initiatic', and 'countert-initiatic' spiritualities in these profoundly uncertain times.

Guénon's writings encompass a wide range of metaphysical themes, yet these works as whole evince a unity and organic coherence which Guénon always saw as a critical part of his work. As a result, each topic is integrally related to many others.In 1921, Guénon published an Introduction to the Study of the Hindu Doctrines. His goal, as he writes it, is an attempt at presenting to westerners eastern metaphysics and spirituality as they are understood and thought by easterners themselves, while pointing at what René Guénon describes as all the erroneous interpretations and misunderstandings of western orientalism and "neospiritualism" (for the latter, notably the proponents of Madame Blavatsky's theosophism). Right from that time, he presents a rigorous understanding, not only of Hindu doctrines, but also of eastern metaphysics in general.[17] He managed to expose these doctrines to a western public viewed by him as quite unprepared and unreceptive as a whole.[18] He departed from standard scholarship (orientalist) terminology and methods and preferred to expose the doctrines as a simple "easterner", devoid of what he called "western prejudices".[19] For one of the most famous aspects of René Guénon's work is the irreducible difference he describes between the East and the West.[20] René Guénon defines eastern metaphysics and intellectuality as of "universal nature", that "opens possibilities of conception which are truly beyond any limitation". His work comprises:

Initiation and Spiritual Realization is the closest thing to a work on 'spiritual direction' René Guénon ever wrote, touching as it does upon such vital topics as the transmission of initiatic grace, the various types and functions of the spiritual master, obstacles the aspirant is likely to encounter, different modes of contemplation, and the degrees of spiritual realization. A companion volume to Perspectives on Initiation, where Guénon had defined the nature of initiation and of the organizations qualified to transmit it, Initiation and Spiritual Realization was the first thematic collection of Guénon's articles to appear after his death. And one doctrine expressed in this book stands out as particularly timely: that esoterism is not and cannot be a religion in itself, since to take it as such is to reduce it to an 'alternative' exoterism, and a heterodox one at that. Initiatic esoterism can only be legitimately and effectively practiced within the context of one of the established, revealed religions.

The Symbolism of the Cross is a major doctrinal study of the central symbol of Christianity from the standpoint of the universal metaphysical tradition, the 'perennial philosophy' as it is called in the West. As Guernon points out, the cross is one of the most universal of all symbols and is far from belonging to Christianity alone. Indeed, Christians have sometimes tended to lose sight of its symbolism of its symbolical significance and to regard it as no more than the sign of a historical event. By restoring to the full spiritual value as a symbol, but without in any way detracting from its historical importance for Christianity, Guenon has performed a task of inestimable importance which perhaps only he, with his unrivaled knowledge of the symbolic languages of both East and West, was qualified to perform.

The classical Triad of the Chinese tradition is Heaven-Man-Earth. René Guénon places this ternary in the context of universal metaphysics by identifying Heaven with Essence and Earth with Substance, the mediator between them being Man, whose cosmic function is to embody spirit (Heaven) while simultaneously spiritualizing matter (Earth). Exploring Chinese cosmology further, Guénon sheds light on such archetypal polarities as Heaven and Earth, Yin and Yang, Solve et Coagula, Celestial and Terrestrial Numbers, the Square and the Compass, the Double Spiral, and the Being and the Environment, while pointing to their synthetic unity in terms of ternaries, such as the Three Worlds, Triple Time, Spiritus, Anima, and Corpus, Sulfur, Mercury and Salt, and God, Man, and Nature. Perhaps more completely than in any other work, Guénon demonstrates in The Great Triad how any integral tradition is both a mirror reflecting universal themes found in all other intact traditions and an entire conceptual cosmos unto itself, unique and incomparable.

In premodern Japan, legitimization of power and knowledge in various contexts was sanctioned by consecration rituals (kanjō) of Buddhist origin. This is the first book to address in a comprehensive way the multiple forms and aspects of these rituals also in relation to other Asian contexts. The multidisciplinary chapters in the book address the origins of these rituals in ancient Persia and India and their developments in China and Tibet, before discussing in depth their transformations in medieval Japan. In particular, kanjō rituals are examined from various perspectives: imperial ceremonies, Buddhist monastic rituals, vernacular religious forms (Shugendō mountain cults, Shinto lineages), rituals of bodily transformation involving sexual practice, and the performing arts: a history of these developments, descriptions of actual rituals, and reference to religious and intellectual arguments based on under-examined primary sources. No other book presents so many cases of kanjō in such depth and breadth. This book is relevant to readers interested in Buddhist studies, Japanese religions, the history of Japanese culture, and in the intersections between religious doctrines, rituals, legitimization, and performance.