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Al-Farabi

Al-Farabi's fields of philosophical interest included—but not limited to, philosophy of society and religion; philosophy of Language and Logic; psychology and epistemology; metaphysics, political philosophy, and ethics. He was an expert in both, practical musicianship and music theory, and although he was not intrinsically a scientist, his works incorporate astronomy, mathematics, cosmology, and physics.
Al-Farabi is credited as the first Muslim who presented philosophy as a coherent system in the Islamic world, and created a philosophical system of his own, which developed a philosophical system that went far beyond the scholastic interests of his Greco-Roman Neoplatonism and Syriac Aristotelian precursors. That he was more than a pioneer in Islamic philosophy, can be deduced from the habit of later writers calling him the "Second Master", with Aristotle as the first.
Al-Farabi's impact on philosophy is undeniable, to name a few, Yahya ibn Adi, Abu Sulayman Sijistani, Abu al-Hassan al-Amiri, and Abu Hayyan al-Tawhidi; Avicenna, Suhrawardi, and Mulla Sadra; Avempace, Ibn Tufail, and Averroes; Maimonides, Albertus Magnus, and Leo Strauss. He was known in the Latin West, as well as the Islamic world. Provided by Wikipedia
Das Buch der Ringsteine al-Fārābi's (gest. 950) : mit dem Kommentare des Amīr Ismāʻīl al-Ḥusainī al-Fārānī (um 1485) /
:
Appeared in part as editor and translators̀ inaugural dissertation, Bonn, 1904.
The Arabic text of the Ringsteine was published in Zeitschrift für Assyriologie, volume 18, pages 257-300 ; the commentary of Emir Ismāʼil in volume 20, pages 16-48 ; "die philosophischen Ansichten" in volume 28, pages 113-146.
Title from ser. t.p. :
xxviii, 510 pages : illustrations ; 24 cm.