# Giles of Lessines

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**Giles of [Lessines](/source/Lessines)**[OP](/source/Dominican_Order) (c. 1230 – c. 1304)[1] was a thirteenth-century [Dominican](/source/Dominican_Order) [scholastic philosopher](/source/Scholastic_philosopher), a pupil of [Thomas Aquinas](/source/Thomas_Aquinas).[2] He was also strongly influenced by [Albertus Magnus](/source/Albertus_Magnus).[3] He was an early defender of [Thomism](/source/Thomism).[4]

He is also known as an early scientist, and for economic theory, writing on [usury](/source/Usury)[5] and market prices.[6]

## 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

1. ["Giles, of Lessines, approximately 1230–approximately 1304 - Medieval Manuscripts"](https://medieval.bodleian.ox.ac.uk/catalog/person_305406727). *medieval.bodleian.ox.ac.uk*. Retrieved 2024-10-04.

1. ["History of Medieval Philosophy 313"](https://web.archive.org/web/20230903015536/https://maritain.nd.edu/jmc/etext/homp313.htm). Archived from [the original](http://maritain.nd.edu/jmc/etext/homp313.htm) on 2023-09-03. Retrieved 2007-10-31.

1. [Albert the Great (Stanford Encyclopedia of Philosophy)](http://plato.stanford.edu/entries/albert-great/)

1. [Work 9: The Doctrinal Life and the Thomistic School](http://www.domcentral.org/trad/domwork/domwork09.htm)

1. ["Usury, Scriptural Economics and Eschatological Time"](https://web.archive.org/web/20071120004948/http://etext.lib.virginia.edu/journals/ssr/issues/volume5/number2/ssr05_02_r02.html). Archived from [the original](http://etext.lib.virginia.edu/journals/ssr/issues/volume5/number2/ssr05_02_r02.html) on 2007-11-20. Retrieved 2007-10-31.

1. [Islam And The Medieval Progenitors Of Austrian Economics](http://www.minaret.org/austrian.htm)

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