Portrait of Prosper of Aquitaine

Prosper of Aquitaine

5th-century Roman Christian writer

Lived
390–463
Country
Ancient Rome

Updated September 2026

About Prosper of Aquitaine

Prosper of Aquitaine, also called Prosper Tiro, was a Christian writer and disciple of Augustine of Hippo, and the first continuator of Jerome's Universal Chronicle. Particularly, Prosper is identified with the (later) axiom 'lex orandi, lex credendi, lex vivendi'—'the law [or those things] we pray is the law we believe is the law we live.

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.