The introduction of Greek philosophy into the Muslim land had far reaching impact on Islamic intellectual and cultural life in the 9th century. Can the Greek philosophy of Plato, Aristotle and Plotinus meet with the philosophies of Islam? In justifying the Greek philosophy or otherwise, several schools of thought emerged such as al-Mu'tazilah and many intellectuals wrote on this subject.
Abu Yusuf Ya'qub al-Kinidy (died 866) was the first Muslim Philosopher to distinguish himself as both a great Muslim thinker and a serious student of the Geek philosophy.
Muhammad bin Zakariya ar-Razi, a prolific author, was one of the most brilliant geniuses of the Middle Ages who wrote about Philosophy, Logic, Astronomy and Physical Science.
Ibn Rush, Al-Razi, al Farabi and Ibn Sina all wrote on Philosophies of Logic, Medicine and Belief.