Essence: The nature of the soul in itself [i.e., its actuality] (75), and its [dynamic] union with the body (76).
Power: The powers of the soul in general (77): its "havings", i.e., its formed potentials.
Cognitive Powers: The Soul's Receptors [ES + IS + I]
Those powers [sensation and perception] which are a preamble to the intellect
(78): as receptors.
The intellectual (79) powers.
Appetitive Powers: The Soul's Activators [MP + SA + W]
The appetitive powers in general (80): as activators.
And the specific appetitive powers:
sensuality (81): sensory appetites,
i.e., emotions;
the will (82): end;
and free choice (83): means.
Intellectual Operations:
How the soul, when united to the body, understands corporeal things beneath
it:
Specifically, through what (84) does it
know them? Phantasms.
How (85) does it know them? Illumination
and Abstraction.
What (86) does it know in them? Quiddities,
i.e., definable structures.
When united to the body, how does the soul know itself (87)? By its act of operation.
When united to the body, how does it know immaterial substances (88) which are above it? By way of negation and relation.
And how does the soul understand when separated from the body (89)? By intelligible species.