The distinction in question is treated with no great reverence by the advocates of free-agency. It is denounced by them as a distinction without a difference; and, though this may be true in the main, yet this is not the way to settle any thing. There is, indeed, a real difference between natural and moral necessity, as they are held and described by necessitarians; and if we pay no attention to it, our declarations about its futility will be apt to produce more heat than light. I fully recognize the justness of the demand made by Dr. Edwards, that those who insist that natural and moral necessity are the same, should tell us in what respects they are so. "We have informed them," says he, "in what respects we hold them to be different. We wish them to be equally explicit and candid," p. 19. I intend to be equally explicit and candid. I admit, then, that there is a real difference between natural and moral necessity; they differ, as the Edwardses say, in the nature of the terms connected. In the one case, there is a natural cause and its effect, such as force and the motion produced by it, connected together; and in the other, there is a motive and a volition. In this respect, I believe that there is a greater difference between them than does the necessitarian himself; for he considers volition to be of the same nature with an effect, whereas I regard it as essentially different in nature and in kind from an effect. There is another difference between natural and moral necessity. Natural necessity admits of an opposition of the will; whereas it is absurd to suppose any such opposition in the case of moral necessity. A man may be so bound that his utmost efforts to move may prove unavailing: in such a case, he is said to labour under a natural necessity. This always implies and presupposes an opposition of will. But not so in regard to moral necessity. It is absurd to suppose, that our wills can ever be in opposition to moral necessity; for this would be to suppose that we are made willing by the influence of motives, and yet are not willing.