12. The difference between a necessary and a free agent is, that the former is determined by its nature to act in a certain way, and cannot act otherwise: the latter may act in more ways than one. Still, as we have seen, the nature even of a free agent is not indifferent to all manner of action. It requires, though it does not constrain, the agent to act in certain definite ways, the ways of moral goodness. Acting otherwise, as he may do, the free agent gainsays his own nature, taken as a whole, a thing that a necessary agent can nowise do. God therefore who, as we have shown, wills and commands all creatures whatsoever to act on the lines of their nature, has especial reason to give this command to His rational creatures, with whom alone rests the momentous freedom to disobey. 13. We are now abreast of the question, of such burning interest in these days, as to the connection of Ethics with Theology, or of Morality with Religion. I will not enquire whether the dogmatic atheist is logically consistent in maintaining any distinction between right and wrong: happily, dogmatic atheists do not abound. But there are many who hold that, whether there be a God or no, the fact ought not to be imported into Moral Science: that a Professor of Ethics, as such, has no business with the name of the Almighty on his lips, any more than a lecturer on Chemistry or Fortification. This statement must be at once qualified by an important proviso. If we have any duties of worship and praise towards our Maker: if there is such a virtue as religion, and such a sin as blasphemy: surely a Professor of Morals must point that out. He cannot in that case suppress all reference to God, for the same reason that he cannot help going into the duties of a man to his wife, or of an individual to the State, if marriage and civil government are natural institutions. If there is a God to be worshipped, any book on Moral Science is incomplete without a chapter on Religion. But the question remains, whether the name of God should enter into the other chapters, and His being and authority into the very foundations of the science. I do not mean the metaphysical foundations; for Metaphysics are like a two-edged sword, that cleaves down to the very marrow of things, and must therefore reveal and discover God. But Morality, like Mathematics, takes certain metaphysical foundations for granted, without enquiring into them. On these foundations we rear the walls, so to speak, of the science of Ethics without reference to God, but we cannot put the roof and crown upon the erection, unless we speak of Him and of His law. Moral distinctions, as we saw (c. vi., s. i. n. 7, p. 113), are antecedent to the Divine command to observe them: and though they rest ultimately on the Divine nature, that ultimate ground belongs to Metaphysics, not to Ethics. Ethics begins with human nature, pointing out that there are certain human acts that do become a man, and others that do not. (c. vi., s. i., p.