 Macaulay believed in the existence of moral truths, which are “interwoven in the nature of contemplative objects” and which exist independently of God or human will. Like other abstract truths, they can be discovered through the use of reason. She defends this intellectualism in her Treatise on the immutability of moral truth, and also sets out to refute the libertarian account of freedom of the will developed by Dr William King in his Concerning the Origin of Evil, as well as the philosophy set out in Bolingbroke’s Philosophical Works.