Περὶ πνεύματος

Also known as: De Spiritu

Author

Aristotle

Language

Classical Attic Greek

Year

c. 320 BCE

Country

Classical Athens

Genre

Nonfiction Book (Treatise, History, Biography, or Book-Length Essay)

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On Breath is a philosophical treatise included in the Corpus Aristotelicum but usually regarded as spurious. Its opening sentence raises the question: "What is the mode of growth, and the mode of maintenance, of the natural vital spirit (pneuma)?"