Certainly it will not be pretended that course of willing and acting that necessarily tends to, and results in, universal misery, can be consistent with the nature and relations of moral agents. Nothing is or can be suited to their nature and relations, that is not upon the whole promotive of their highest well-being. Expediency and right are always and necessarily at one. They can never be inconsistent. That which is upon the whole most expedient is right, and that which is right is upon the whole expedient.
Moral law is the only possible rule of moral obligation.
A distinction is usually made between moral, ceremonial, civil and positive laws. This distinction is in some respects convenient, but is liable to mislead, and to create an impression that something can be obligatory, in other words can be law, that has not the attributes of moral law. Nothing can be law, in any proper sense of the term, that is not and would not be universally obligatory upon moral agents under the same circumstances. It is law because, and only because, under all the circumstances of the case, the course prescribed is fit, proper, suitable, to their natures, relations, and circumstances. There can be no other rule of action for moral agents but moral law, or the law of benevolence.