A philosopher who wrote in this language criticized blind adherence to authority-based opinion and observed how it led to generational religious stagnation in Deliverance from Error. Competing arguments in this language include one beginning with a “necessary existent” called the (10[1])Proof of the Truthful and one propounded by William Lane Craig. Extra internal senses like estimation were posited by a thinker who used this language to imagine a being generated without awareness of his body in the “floating man” thought experiment. A thinker dubbed the “Second Teacher” wrote a commentary on Aristotle’s Metaphysics in this language that was also used to write The Incoherence of the Philosophers. For 10 points, name this language used by Avicenna and al-Ghazali. ■END■