Summary of text [comment] page 33

Let us look at those spontaneous appetites [dispositions] more closely.  They may be sensual (material) or spiritual (immaterial).  They substantiate the person as a mediating creature.

Mediation changes both the outside world and the creature.  So human action, as sin or virtue, changes both our world and our own persons.

How does human action change the world?

Every action is an event on its own, that is, an objective actuality independent of the mediator.  Every action occurs in circumstances and changes circumstances.  These changes may be labeled “objective”.

How does human action change the actor?

The person is distinct from circumstances, even as the person operates in circumstances.  The change in the person during human action is correspondingly “subjective”.

The terms “objective” and “subjective” thus become difficult to comprehend.  They depend on where one stands.]