Ibn Taymiyyah's (b. 661 AH/ 1263 CE) al-Radd ala al-Mantiqiyyin is a response to a discussion he had with one who strongly inclined towards philosophy. He called it Nasihat ahl al-Iman fi al-Radd ala Mantiq al-Yunan. Ibn Taymiyyah was certain that it was the Greek form of logical reasoning that led to the philosophical doctrines of the eternity of the universe and the subsequent debate in the Islamic world about the creation of the Qur'an. If he could thus undermine the fundamental principles of this logical system, the philosophy erected on it would come tumbling down itself. In his view, this could be done by contesting the manner in which Greek logic forms definitions and employs syllogistic formulae to reach certitude. The Radd thus constitutes his focused, insightful and lethal attack on Aristotelian Logic.