The relationship of the external things to our powers of cognition is only conceivable through the knowledge of external and internal senses. After investigating the sensory powers of human soul we conclude as follows; first, both the intellectual powers and the sensory powers accept a form (forma) of the external object without matter (materia), but in order to receive a new form, the previous form must not be destroyed. Secondarily, so far as both of them are powers, they are in potentia, but can respectively discriminate their own objects. These conclusions, mentioned above, were given from the view point of operational resemblance between intellectual powers and sensory powers. But speaking of operational difference between the two, even if they have, in a sense, a functional continuity in one and the same substance (anima) they are differentiated with respect to their formal objects, namely, the object that is immediately known by the sense powers is singularia, but that which is known by the intellect is universalia.
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