Liber de Definitionibus [incomplete], by Isaac Israeli ben Solomon

A text beginning with 'Incipit liber Isaac de diffinitionibus' is included on the last folios, ff. 34v-36v, of this manuscript. The work on these folios seems to be a text on philosophy by a 9th-10th century Arabic physician and philosopher, Isaac Israeli ben Solomon, also known as Isaac Israeli the Elder. He is most famous as the father of medieval Jewish neoplatonism, but he wrote scientific treatises on medicine, as well as pyschology and logic. Of his philosophical and logical texts, his book of definitions (included on ff.34-36 of MS 134) is the best known of his philosophical works. In this, he discusses some of Aristotle's ideas, and gives definitions for the soul, wisdom, and nature, among many others. Similarly to the other text bound in MS 134, this Arabic work by Israeli was transmitted to the Latin west in the 12th century, where it was translated and used by scholars and Christian thinkers. The work of Israeli, including his Definitiions, experienced much more fame and had greater influenced on Christian and European scholars than it did on the work of Muslim writers. In medieval Europe, Church thinkers including Thomas Aquinas, Bonaventura, and Roger Bacon, among many others, consulted and quoted Israeli's work.