The Traditionalist School of thought, also known as Integral Traditionalism (in the sense of Integralism) or Perennialism (in the sense of perennial philosophy, or Sophia Perennis) is an esoteric movement inspired by the interwar period writings of French metaphysician René Guénon and developed by authors such as German-Swiss philosopher Frithjof Schuon, the Ceylonese-British scholar Ananda Coomaraswamy, Italian occultist Julius Evola, Titus Burckhardt, Martin Lings, Huston Smith, and Seyyed Hossein Nasr. The movement divided in 1948-50 after a split between Guénon and Schuon.