Averroism follows the teachings of Abdul Walid Muhammad Ibn Ahmad Ibn Rushd or Averroes, an Arabian Scientist and Philosopher in the 13th century, and his interpretations of Aristotle and his reconciliation of Aristotelianism with the Islamic faith. Besides Averroes, the main philosophers involved in the movement were Siger of Brabant and Boetius of Dacia. The main ideas of the earlier philosophical concept of Averroism — found in Averroës' commentaries to Aristotle — were: