The Perennial Philosophy was created in 1945.

Saroj Kumar Das has written:

'Tagore and the perennial problems of philosophy' -- subject(s): Philosophy

Perennial questions in the philosophy of man include inquiries about the nature of existence, the purpose of human life, the relationship between mind and body, the concept of free will, the nature of consciousness, and the existence of a soul or higher self. These questions have been debated by philosophers throughout history and continue to be central to discussions about human nature and the human experience.

it is perennial

Virgil B. Strohmeyer has written:

'The importance of Teseo Ambrogio degli Albonesi's selected Armenian materials for the development of the renaissance's perennial philosophy and an armenological philosophical tradition' -- subject(s): Armenian Philosophy, Criticism and interpretation, Renaissance Philosophy