I would, however, carefully point out that though their unsystematic arrangement here may create the impression that these papers are merely isolated readings in Religion pointed by casual scientific truths, they are organically connected by a single principle. Nothing could be more false both to Science and to Religion than attempts to adjust the two spheres by making out ingenious points of contact in detail. The solution of this great question of conciliation, if one may still refer to a problem so gratuitous, must be general rather than particular. The basis in a common principle--the Continuity of Law--can alone save specific applications from ranking as mere coincidences, or exempt them from the reproach of being a hybrid between two things which must be related by the deepest affinities or remain forever separate. To the objection that even a basis in Law is no warrant for so great a trespass as the intrusion into another field of thought of the principles of Natural Science, I would reply that in this I find I am following a lead which in other departments has not only been allowed but has achieved results as rich as they were unexpected. What is the Physical Politic of Mr. Walter Bagehot but the extension of Natural Law to the Political World? What is the Biological Sociology of Mr. Herbert Spencer but the application of Natural Law to the Social World? Will it be charged that the splendid achievements of such thinkers are hybrids between things which Nature has meant to remain apart? Nature usually solves such problems for herself. Inappropriate hybridism is checked by the Law of Sterility. Judged by this great Law these modern developments of our knowledge stand uncondemned. Within their own sphere the results of Mr. Herbert Spencer are far from sterile--the application of Biology to Political Economy is already revolutionizing the Science. If the introduction of Natural Law into the Social sphere is no violent contradiction but a genuine and permanent contribution, shall its further extension to the Spiritual sphere be counted an extravagance? Does not the Principle of Continuity demand its application in every direction? To carry it as a working principle into so lofty a region may appear impracticable. Difficulties lie on the threshold which may seem, at first sight, insurmountable. But obstacles to a true method only test its validity. And he who honestly faces the task may find relief in feeling that whatever else of crudeness and imperfection mar it, the attempt is at least in harmony with the thought and movement of his time.