We pass over the second part of the lectures, devoted to Apologetics, as of no importance. One needs to know what Christianity is, and to have clearly in his mind the entire Christian plan, before one can successfully defend it against the class of persons the author calls 14 Positivists. This is more than the author knows, or as a Protestant can know. His Christianity is an indefinite, vague, variable, and uncertain opinion, and he has no conception at all of the Christian plan, or what St. Paul calls “the new creation.” No doubt the miracles are provable by simple historical testimony by and to one who knows nothing of the Christian plan, or of its supernatural character; but to the unbelievers of our time it is necessary to set forth, in its unity and catholicity, the Christian _schema_, if we may be allowed the term, and to show that miracles themselves have their reason or law in the divine plan or decree, and are no more anomalies, in relation to that plan or decree, or _ex parte Dei_, than are earthquakes and volcanoes. It is only in this way we can satisfy the demand for order and regularity. The unbeliever may not be able to resist the testimony which proves the miracle a fact, but till we show him that in a miracle the natural laws are not violated, or that nature does not go out of her course, as he imagines, we cannot satisfy him that he can yield to the miracle without surrendering his natural reason, and the law and order of the universe. Now, this the Protestant cannot do; and though he might adduce the historical evidences of Christianity satisfactory to a simpler age, or to minds, though steeped in error, yet retaining from tradition a full belief in the reality of a supernatural order, he cannot as a Protestant do it to minds that deny that there is or can be anything above nature, and that refuse utterly to admit the supernatural order, which the miracles manifest, or that reject miracles, not because the testimony is insufficient, but because they cannot be admitted without admitting the reality of the supernatural. The prejudice against the supernatural must be removed as the preliminary work, and this can be done only by presenting Christianity as a whole in its unity and catholicity, and showing that, according to it, the supernatural or Christian order enters into the original decree of God, and is necessary to complete what is initial in the cosmos, or to perfect the natural order and to enable it to fulfil the purpose for which it exists, or realize its destiny or final cause, in which is its beatitude or supreme good. This done, the prejudice against the supernatural is removed, miracles are seen to be in the order, not indeed of nature, as Carlyle pretends, but in the order of the supernatural, and demanding only ordinary historical testimony to be proved, and consequently Hume’s famous argument against miracles, refuted by no Protestant that has protested against it, shown to have no force.