Early Islamic law placed importance on formulating standards of argument, which gave rise to a "novel approach to logic" (Arabic: منطق manṭiq "speech, eloquence") in Kalam (Islamic scholasticism).However, with the rise of the Mu'tazili philosophers, who highly valued Aristotle's Organon, this approach was displaced by the older ideas from Hellenistic philosophy. The works of al-Farabi, Avicenna, al-Ghazali and other Muslim logicians who often criticized and corrected Aristotelian logic and introduced their own forms of logic, also played a central role in the subsequent development of European logic during the Renaissance. Scholars who have studied Islamic logic include Nicholas Rescher, who in a 1964 work contextualized some 170 Arabic-language logicians, without the book being exhaustive. There have been hundreds of original treatises in the subject as well thousands of later commentaries or supra-commentaries.
According to the Routledge Encyclopedia of Philosophy:
