philosophia perennis

noun, sometimes capitalized both P's
phil·​o·​so·​phia pe·​ren·​nis | \ ˌfiləˈsōfēəpəˈrenə̇s\

Definition of philosophia perennis

: a group of universal philosophical problems, principles, and ideas (as concepts of God, freedom, and immortality) that perennially constitutes the primary subject matter of philosophical thought : the foundations of Roman Catholic Christian principles especially as philosophically formulated by St. Thomas Aquinas and Neothomists some Philosophia Perennis which would be agreed on in advance as a sort of intellectual base of operations— H. D. Aiken

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History and Etymology for philosophia perennis

New Latin, literally, perennial philosophy

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a shady place in a garden or forest

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