An essay on spirit, [electronic resource] : wherein the doctrine of the Trinity is considered in the light of nature and reason; as well as in the light in which it was held by the ancient Hebrews: Compared also with the Doctrine of the Old and New Testament. With An Inquiry into the Sentiments of the Primitive Fathers of the Church: and The Doctrine of the Trinity as maintained by the Egyptians, Pythagoreans, and Platonists. Together with some remarks on the Athanasian and Nicene creeds. From the Dublin copy, with additions and corrections by the author.