Averroes and Aquinas have different manners to solve the question of subject. For Averroes the subject is a particular 'carrier' of universal nature. For Aquinas it is an essential subject for accidental features. Both metaphysics are based on Aristotle's texts. Averroes preferred the latest stage of Stagirite's thought, from 'Metaphysica Z', with forma-quidditas as 'prima substantia'. However Aquinas preferred early Aristotle from 'Cathegoriae', with individual being as primary substance.
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