It may be Emerson’s boast that he has no system. This restlessness under any, even nominal, _régime_ is a characteristic of contemporaneous philosophy outside the church. There is liberty enough in the church; and, in fact, beyond it we see nothing but imprisonment, for nothing so practically chains the intellect of man as irresponsible freedom. It is like the liberty of the ocean enjoyed (?) by a mariner without sails or compass. A Catholic philosopher can speculate as much as he pleases. The security of the faith gives him a delightful sense of safe freedom. Like O’Connell’s driving a coach and four through an act of Parliament, he may go to the outermost verge of speculation. St. Thomas moves the most outrageous fallacies, speculations, and objections, and discusses them, too, with all the boldness of intellectual freedom. It is Dr. Marshall, we think, who shows that all intellectual activity and freedom are enjoyed within the spacious bounds of Catholic truth. Even in theology there are wide differences. The Catholic intellect is supposed to be completely bridled. We once read a powerful arraignment of our Scriptural proofs for purgatory, written by an eminent Protestant theologian. He must have been surprised to learn that Catholic theologians do not attach all importance to the Scriptural argument for purgatory. The different schools of Catholic theology argue _pro_ and _con_. as keenly as old Dr. Johnson himself would have desired, but without the slightest detriment to the unity of the faith. Nothing can be falser than the received Protestant notion that we are helplessly bound by a network of petty definitions and regulations. There are, however, great and immovable principles which are understood to guide and vivify the Catholic intellect. And such systemization is necessary to all knowledge. Without it a man’s mind, like Emerson’s, wanders comet-like, attracting attention by its vagaries, but is of no intelligible use to the universe, and gives no light, except of a nebulous and perplexing nature.