It is quite true, that self-cure is of all things the most arduous; but that which is impossible _to the man within us_, may be altogether possible _to the God_. In truth, the denial of such changes, under the affectation of great knowledge of man, shows an incredible ignorance of men. Why, the history of every great religious revolution, such as the spread of Methodism, is made up of nothing else; the instances occurring in such number and variety, as to transform the character of whole districts and vast populations, and to put all scepticism at utter defiance. And if some more philosophic authority is needed for the fact, we may be content with the sanction of Lord Bacon, who observed that a man reforms his habits either altogether or not at all. Deterioration of mind is indeed always gradual; recovery usually sudden; for God, by a mystery of mercy, has established this distinction in our secret nature,--that, while we cannot, by one dark plunge, sympathize with guilt far beneath us, but gaze at it with recoil till intermediate shades have rendered the degradation tolerable, we are yet capable of sympathizing with moral excellence and beauty infinitely above us; so that, while the debased may shudder and sicken at even the true picture of themselves, they can feel the silent majesty of self-denying and disinterested duty. With a demon can no man feel complacency, though the demon be himself; but God can all spirits reverence, though his holiness be an infinite deep. And thus the soul, privately uneasy at its insincere state, is prepared, when vividly presented with some sublime object veiled before, to be pierced, as by a flash from heaven, with an instant veneration, sometimes intense enough to fuse the fetters of habit, and drop them to the earth whence they were forged. The mind is ready, like a liquid on the eve of crystallization, to yield up its state on the touch of the first sharp point, and dart, over its surface and in its depths, into brilliant and beautiful forms, and from being turbid and weak as water, to become clear as crystal, and solid as the rock. One of the most elaborate and valuable productions from Mr. Martineau's pen, an article closely allied in all respects to the ensuing Studies of Christianity, is the one of some portions of which we herewith present an epitome. THE CHRISTIAN VIEW OF MORAL EVIL.