IV. When pressed with such appalling difficulties as these, the Necessitarian falls back, in self-justification, upon the _reason why_ the sinner cannot be holy. The only reason, it is said, why the sinner does not do as he ought is, not the want of power, but the strength of his sinful inclinations. Shall he plead these in excuse for sin? By no means. They constitute the very essence of the sinner's guilt. Let it be borne in mind, that, according to the doctrine of Necessity, such is the connection between the nature, or constitution of the sinner's mind--a nature which God has given him, and the influences under which he is placed by Divine Providence--that none but these very inclinations are possible to him, and these cannot but exist. From these inclinations, sinful acts of Will cannot but arise. How is the matter helped, as far as ability and obligation, on the part of the sinner, are concerned, by throwing the guilt back from acts of Will upon inclinations equally necessary? NECESSARIAN DOCTRINE OF LIBERTY. The real liberty of the Will, according to the Necessitarian scheme, next demands our attention. All admit that Liberty is an essential condition of moral obligation. In what sense, then, is or is not, man free, according to the doctrine of Necessity? "The plain and obvious meaning of the words Freedom and Liberty," says President Edwards, "is power, opportunity, or advantage, that any one has to do as he pleases. Or, in other words, his being free from hinderance or impediment in the way of doing or conducting in any respect as he wills. And the contrary to Liberty, whatever name we please to call that by, is a person's being hindered, or unable to conduct as he will, or being necessitated to do otherwise." "The only idea, indeed, that we can form of free-agency, or of freedom of Will," says Abercrombie, "is, that it consists in a man's being able to do what he wills, or to abstain from doing what he will not. Necessary agency, on the other hand, would consist in a man's being compelled, by a force from without, to do what he will not, or prevented from doing what he wills." With these definitions all Necessitarians agree. This is all the Liberty known, or conceivable, according to their theory. Liberty does not consist in the power to choose in one or the other of two or more different and opposite directions, under the same influence. It is found wholly and exclusively in the connection between the act of Will, considered as the antecedent, and the effort, external or internal, considered as the consequent. On this definition I remark, 1. That it presents the idea of Liberty as distinguished from _Servitude_, rather than Liberty as distinguished from Necessity. A man is free, in the first sense of the term, when no external restraints hinder the carrying out of the choice within. This, however, has nothing to do with Liberty, as distinguished from Necessity.