<Ul> <Li> Hylomorphism - development of the Aristotelian doctrine that individual things are a compound of material and form (the statue is a compound of granite, and the form sculpted into it) </Li> <Li> Existence - being qua being </Li> <Li> Causality - Discussion of causality consisted mostly of commentaries on Aristotle, mainly the Physics, On the Heavens, On Generation and Corruption . The approach to this subject area was uniquely medieval, the rational investigation of the universe being viewed as a way of approaching God . Duns Scotus' proof of the existence of God is based on the notion of causality . </Li> <Li> Individuation . The problem of individuation is to explain how we individuate or numerically distinguish the members of any kind for which it is given . The problem arose when it was required to explain how individual angels of the same species differ from one another . Angels are immaterial, and their numerical difference cannot be explained by the different matter they are made of . The main contributors to this discussion were Aquinas and Scotus . </Li> </Ul> <Li> Hylomorphism - development of the Aristotelian doctrine that individual things are a compound of material and form (the statue is a compound of granite, and the form sculpted into it) </Li> <Li> Existence - being qua being </Li> <Li> Causality - Discussion of causality consisted mostly of commentaries on Aristotle, mainly the Physics, On the Heavens, On Generation and Corruption . The approach to this subject area was uniquely medieval, the rational investigation of the universe being viewed as a way of approaching God . Duns Scotus' proof of the existence of God is based on the notion of causality . </Li>

What were the ingredients of the early medieval synthesis