"This book considers the doctrines of free will and moral agency in light of Christianity. The subject is of such importance as to demand attention, and the most thorough consideration. Of all kinds of knowledge that we can ever obtain, the knowledge of God, and the knowledge of ourselves, are the most important. As religion is the great business, for which we are created, and on which our happiness depends; and as religion consists in an intercourse between ourselves and our Maker, and so has its foundation in God's nature and ours, and in the relation that God and we stand in to each other; therefore a true knowledge of both must be needful, in order to true religion. But the knowledge of ourselves consists chiefly in right apprehensions concerning those two chief faculties of our nature, the understanding and will"--Preface. (PsycINFO Database Record (c) 2008 APA, all rights reserved).