Peter John Olivi
Medieval Franciscan theologian and philosopher from Languedoc, known for his influential work on evangelical poverty, church authority, apocalyptic thought, and economic theory (usury, contracts, market value). His writings were controversial and partially condemned but deeply impacted the Spiritual Franciscans and later scholastic debates.
Books
This list of books are ONLY the books that have been ranked on the lists that are aggregated on this site. This is not a comprehensive list of all books by this author.
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1. A Treatise On Contracts
A medieval scholastic examination of contracts that integrates moral theology with practical commerce, defining just price through community estimation, scarcity, usefulness, labor, and risk; it distinguishes legitimate profit from usury via concepts like damnum emergens and lucrum cessans, and assesses loans, sales, partnerships, annuities, and other risk-sharing arrangements to guide fair intention, consent, and responsibility in time-bound, uncertain exchanges.