Übersetzerschule von Toledo
At the request of Aquinas, so it is assumed—the source document is not clear—he undertook a complete translation of the works of Aristotle directly from the Greek or, for some portions, a revision of existing translations. The reason for the request was that many of the copies of Aristotle in Latin then in circulation had originated in Spain (see Toledo School of Translators), from Arabic whose texts in turn had often passed through Syriac versions rather than being translated from the originals.