Charity and Good Works (pt. 34)
v Doctrinal Series v
The private duties of charity are also numerous, such as the payment of wages to workmen, the payment of interest, the fulfillment of contracts, the guarding of securities, and so on, some of which are duties enforced by statute law, some by common law, and some by moral law. These duties also are discharged by those who are in charity from one state of mind, and by those who are not in charity from another state of mind.
Those who are in charity perform them justly and faithfully; for it is a precept of charity that everyone should act justly and faithfully toward all with whom he has any business or dealing (on which above, n. 422-425). But those who are not in charity discharge these same duties very differently.