Avicenna (Ibn Sina) was and remains the pre-eminent Islamic philosopher. AL-MADKHAL, the first part of the logic of his masterwork AS-SHIFA, is a commentary of Avicenna (Ibn Sina) on Porphyry's ISAGOGE. AL-MADKHAL is the only part of Avicenna's logic included in the Medieval Latin translation of Avicenna's works. There, known as the LOGICA, it had wide influence, especially in the thirteenth century. In addition to remarking on the text of the ISAGOGE in a very critical way, Avicenna gives an overview of his entire work. While Porphyry says that he will avoid difficult questions about universals, in contrast Avicenna considers their status. AL-MADKHAL contains a major discussion of Avicenna's theory of the threefold distinction of quiddity, said by De Wulf to be the main medieval solution to the problem of universals. The translation comes with Notes and an Introduction, placing AL-MADKHAL in context.

Avicenna gilt als einer der bedeutendsten Ärzte, Astronomen, Denker und Schriftsteller des Islamischen Goldenen Zeitalters Er wurde als Vater der frühen modernen Medizin beschrieben. Von den 450 Werken, die bekannt sind, sind rund 240 erhalten geblieben, davon 150 zur Philosophie und 40 zur Medizin. (Wikipedia)