Pallis described "tradition" as being the leitmotif of his writing. He wrote from the perspective of what has come to be called the traditionalist or perennialist school of comparative religion founded by René Guénon, Ananda K. Coomaraswamy, and Frithjof Schuon, each of whom he knew personally. As a traditionalist, Pallis assumed the "transcendent unity of religions" (the title of Schuon's landmark 1948 book) and it was in part this understanding that gave Pallis insight into the innermost nature of the spiritual tradition of Tibet, his chosen love. He was a frequent contributor to the journal "Studies in Comparative Religion" (along with Schuon, Guénon, and Coomaraswamy), writings on both the topics of Tibetan culture and religious practice as well as the Perennialist philosophy.