BOOK IV
ON SIN
PART I
ON SIN IN GENERAL
CHAPTER I
THE NATURE OF SIN
I. A SIN is nothing but a bad human act, and it may be defined as a free transgression of the law of God. For a bad human act is a disturbance of right order either because in itself it is against right reason, as murder or suicide, or because it is against the command of a legitimate superior, which imposes a strict obligation, and which right reason bids us obey. But such a disturbance of right order is against the law of God.
Every voluntary act against right reason is an offence against God and a sin, for although the sinner in committing sin does not always think explicitly of God, yet he always apprehends that he is doing a wrong action, an action which his conscience condemns, and in the condemnation of conscience is implicitly contained the condemnation of God himself.
A sin must be distinguished from an imperfection, which is either negative or positive. A negative imperfection is merely the omission of a good action which is not of precept; and such an omission when grace moves one to perform the act, though not a sin, yet is a falling short of the perfection which was within one's reach. A positive imperfection is a violation of God's will made known to us, but which does not strictly oblige us. God wishes a religious to observe his rule, but frequently this does not bind under sin. A positive imperfection, then, is a falling short not only of the perfection which was offered to us and which we might have had, but also of that which God wished us to have, though he did not oblige us to have it.
2. Sin in the sense defined is called actual sin; habitual sin is the state which follows the commission of actual sin until this be forgiven.
