In Europe, he examined the three main branches of Christianity, visiting Roman Catholic, Protestant, and Orthodox countries.

[1] Azevedo has written a number of books in Portuguese on comparative religion, the perennial philosophy, criticisms of the materialist mentality of the modern world, and the mystical and esoteric dimensions of Christianity and Islam.

[4] Some of them have been translated into English, French, Spanish, and Italian, and published in spirituality- and ideas-oriented publications including Sophia (USA), Sacred Web (Canada), Dossiers H [fr] (Switzerland) and Ultreia (France).

[5][6] He is also the translator into Portuguese of Frithjof Schuon, a Swiss metaphysician of the perennialist school, of Martin Lings, William Stoddart, C.S.

[7][2] In the Folha de São Paulo, professor Paulo Daniel Farah, in his review of 1 April 2006, reports that in A Inteligência da Fé ("The Intelligence of Faith"), Azevedo explains that, "according to perennial philosophy, religions are determined by Ideas, in the Platonic sense of the term, or perennial spiritual archetypes, which manifest themselves from time to time in the world of history and mutability.