Answer
Islamic esotericism, studied by René Guénon, refers to the mystical and spiritual teachings within Islam that emphasize the inner meaning and symbolism of religious practices and texts. Guénon, a French philosopher and esotericist, believed that Islamic esotericism contained universal truths and principles that transcended specific religious traditions. He sought to uncover these truths through the study of Islamic symbolism, metaphysics, and cosmology.