I offer a reconstructive reading of Ṭūsī’s (1201-1274) account of natural goodness in the Naserian Ethics. I show that Ṭūsī’s version of Aristotelian ethics is especially well-suited to accommodate an intuition that is hard to integrate into a theory of natural goodness: human good is nobler or more elevated than animal and vegetative goods. To do this, I analyze Ṭūsī’s discussion of the relationship between different kinds of perfection from non-living material compounds to vegetative, animal, human, and divine beings. I (...) close by noting that, depending on our reading of Ṭūsī’s conception of di-vine beings and their perfection, his proposal might come at a cost to his Aristotelian naturalist ambitions for ethics. (shrink)