Giles of

Lessines Lessines (; nl, Lessen, ; pcd, Lissene, wa, Lissene) is a city and municipality of Wallonia located in the province of Hainaut, Belgium. As of the 2014 census, The municipality's total population was 18,637. The total area is 72.29 km² (27 ...

OP (died ) was a thirteenth-century Dominican

scholastic philosopher Scholasticism was a medieval school of philosophy that employed a critical organic method of philosophical analysis predicated upon the Aristotelian 10 Categories. Christian scholasticism emerged within the monastic schools that translat ...

, a pupil of

Thomas Aquinas Thomas Aquinas, OP (; it, Tommaso d'Aquino, lit=Thomas of Aquino; 1225 – 7 March 1274) was an Italian Dominican friar and priest who was an influential philosopher, theologian and jurist in the tradition of scholasticism; he is known wit ...

. He was also strongly influenced by

Albertus Magnus Albertus Magnus (c. 1200 – 15 November 1280), also known as Saint Albert the Great or Albert of Cologne, was a German Dominican friar, philosopher, scientist, and bishop. Later canonised as a Catholic saint, he was known during his li ...

. He was an early defender of

Thomism Thomism is the philosophical and theological school that arose as a legacy of the work and thought of Thomas Aquinas (1225–1274), the Dominican philosopher, theologian, and Doctor of the Church. In philosophy, Aquinas' disputed questions ...

. He is also known as an early scientist, and for economic theory, writing on

usury Usury () is the practice of making unethical or immoral monetary loans that unfairly enrich the lender. The term may be used in a moral sense—condemning taking advantage of others' misfortunes—or in a legal sense, where an interest rate is c ...

and market prices.Islam And The Medieval Progenitors Of Austrian Economics
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Works

Among the works authored by Giles are: *''Commentarium in libros I et II Sententiarum'' *''De concordia temporum'' *''De essentia, motu et significatione cometarum'' *''De geometria'' *''Epistula Alberto Magno missa'' *''Summa de temporibus'' *''De unitate formae'' *''De usuris'' *''Quaestiones theologicae''

Notes

1300s deaths Year of birth unknown Year of death uncertain Scholastic philosophers Members of the Dominican Order County of Hainaut 13th-century Roman Catholic priests 14th-century Roman Catholic priests 13th-century Roman Catholic theologians 13th-century philosophers {{Philosopher-stub