Such a mode of treatment in the present instance was the more possible, from the circumstance that the writer, when studying the subject for his private information, without any design to write upon it, had endeavoured to bring his own principles and views perpetually to the test; and to reconsider them candidly by the light of the new suggestions which were brought before him. Instead of approaching the inquiry with a spirit of hostility, he had investigated it as a student, not as a partisan. It may perhaps be permitted him without egotism to explain the causes which led him to the study. He had taken holy orders, cordially and heartily believing the truths taught by the church of which he is privileged to be an humble minister. Before doing so, he had read thoughtfully the great works of evidences of the last century, and knew directly or indirectly the character of the deist doubts against which they were directed. His own faith was one of the head as well as the heart; founded on the study of the evidences, as well as on the religious training of early years. But he perceived in the English church earnest men who held a different view; and, on becoming acquainted with contemporary theology, he found the theological literature of a whole people, the Germans, constructed on another basis; a literature which was acknowledged to be so full of learning, that contemporary English writers of theology not only perpetually referred to it, but largely borrowed their materials from German sources. He wished therefore fully to understand the character of these new forms of doubt, and the causes which had produced them. He may confess that, reposing on the affirmative verities of the Christian faith, as gathered from the scriptures and embodied in the immemorial teaching of Christ’s church, he did not anticipate that he should discover that which would overthrow or even materially modify his own faith; but he wished, while exploring this field, and gratifying intellectual curiosity, to re-examine his opinions at each point by the light of those with which he might meet in the inquiry. The serious wish also to fulfill his duty in the sphere in which he might move, made him desire to understand these new views; that if false, he might know how to refute them when they came before him, and not be first made aware of their existence from the harsh satire of sceptical critics. His own studies were accordingly conducted in a spirit of fairness—the fairness of the inquirer, not of the doubter; and a habit of mind formed by the study of the history of philosophy, was brought to bear upon the investigation of this chapter in church history: first, of modern forms of doubt, and afterwards the consecutive history of unbelief generally. Accordingly, while he hopes that he has taken care to leave the student in no case unguided, who may accompany him in these pages through the history, he has wished to place him, as he strove to