Philosophy, by its very nature of bringing things into question, is at odds with the authority of the political and the religious. So it is no small task that the twelfth century Andalusian philosopher, Ibn Rushd, sets for himself in On the Harmony of Religion and Philosophy. This harmony is achieved by adjusting the Quran to fit Aristotelian philosophical thought through the allegorical interpretation of intransigent passages. That scripture should be interpreted symbolically when it...