Select Works, Section 234 (part 2)

It is universally true that the characteristic Act of immaterial entities is performed without any change in them- otherwise they would at last be worn away- theirs is the Act of the unmoving; where act means suffering change, there is Matter: an immaterial Being would have no ground of permanence if its very Act changed it. Thus in the case of Sight, the seeing faculty is in act but the material organ alone suffers change: judgements are similar to visual experiences. But how explain the alternation of timidity and daring in the initiative faculty? Timidity would come by the failure to look towards the Reason-Principle or by looking towards some inferior phase of it or by some defect in the organs of action- some lack or flaw in the bodily equipment- or by outside prevention of the natural act or by the mere absence of adequate stimulus: boldness would arise from the reverse conditions: neither implies any change, or even any experience, in the Soul. So with the faculty of desire: what we call loose living is caused by its acting unaccompanied; it has done all of itself; the other faculties, whose business it is to make their presence felt in control and to point the right way, have lain in abeyance; the Seer in the Soul was occupied elsewhere, for, though not always at least sometimes, it has leisure for a certain degree of contemplation of other concerns. Often, moreover, the vice of the desiring faculty will be merely some ill condition of the body, and its virtue, bodily soundness; thus there would again be no question of anything imported into the Soul.