“Thanks to the labors of a science which is comparatively recent, and more especially to the researches of the students of Hindu and Egyptian antiquities, it is very much easier today than it was not so long ago to discover the source, to ascend the course and unravel the underground network of that great mysterious river which since the beginning of history has been flowing beneath all the religions, all the faiths, and all the philosophies: in a word, beneath all the visible and every-day manifestations of human thought.”

Maurice Maeterlinck, 1922