Writers such as WT Stace, Huston Smith, and Robert Forman argue that there are core similarities to mystical experience across religions, cultures and eras.
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Mateus Soares de Azevedo has a graduate degree in international relations from George Washington University and holds a Masters degree in History of religions from the University of São Paulo, with a thesis on the contemporary relevance of the Perennial philosophy.
The company publishes The Library of Perennial Philosophy, which focuses on the Truth underlying the diverse religions, also referred to as Sophia Perennis—or perennial Wisdom.