It is the unalterable demand of the reason, that the whole being, whatever there is of it at any time, shall be entirely consecrated to the highest good of universal being, and for this reason God requires this of us, with all the weight of His authority. Moral law proposes but one ultimate end of pursuit, to God, and to all moral agents. All its requisitions, in their spirit, are summed up and expressed in one word, love or benevolence. This I only announce here. It will more fully appear hereafter.
Moral law is a pure and simple idea of the reason.
It is the idea of perfect, universal, and constant consecration of the whole being to the highest good of being. That which is upon the whole most wise is expedient. That which is upon the whole expedient is demanded by moral law. True expediency and the spirit of moral law are always identical. Expediency may be inconsistent with the letter, but never with the spirit of moral law.