Philosophia perennis
Philosophia perennis vel perennialismus vel sapientia perennis est systema philosophiae quae aeternitatem axiomatum spiritalium et naturalium affirmat. Augustinus Steuchus episcopus Italicus hoc notionem excogitavit, et Godefridus Guilielmus Leibnitius philosophus Germanicus id confirmavit.

Absolutum
Philosophia religiosa
Plutarchi Moralia, liber 26, "De Iside et Osiride"
Transcendentia
Universalitas

Bibliographia 
Huxley, Aldous. 1945. The perennial philosophy. Novi Eboraci: Harper & Brothers.
Huxley, Aldous. 1990. The Perennial Philosophy. Novi Eboraci: Harper & Row. ISBN 006090191.8
Huxley, Aldous. 2004. The Perennial Philosophy. Harper Modern Classics. Novi Eboraci: Harper & Row. ISBN 006057058X.
Holman, John. 2008. The Return of the Perennial Philosophy: The Supreme Vision of Western Esotericism. Watkins Publishing. ISBN 1905857462.
Steuchus, Augustinus. 1540. De perenni philosophia. Lugduni.