The book is a collection of articles on Sufism and Taoism. The influence of Islamic culture on the European Renaissance, on Western science and philosophy is shown. The book "Dante's Esotericism" is devoted to the same topic, in which a very deep interpretation of the work of the wonderful poet and the Initiate is given. Taoism, which is also seen by Guénon as a metaphysical esoteric doctrine, is socially complemented by Confucianism, which is the exoteric embodiment of the One Tradition. Tradition can have a wide variety of types of incarnation.