This natural necessity, or co-action, it is admitted on all hands, destroys accountability for external conduct, wherever it obtains. Indeed, if a man is compelled to do a thing against his will, this is not, properly speaking, his act at all; nor is it an omission of his, if he wills to do a thing, and is necessarily prevented from doing it by external restraint. But it should be observed that natural necessity, or co-action, reaches no deeper than the external conduct; and can excuse for nothing else. As it does not influence the will itself, so it cannot excuse for acts of the will. Indeed, it presupposes the existence of a volition, or act of the will, whose natural consequences it counteracts and overcomes. Hence, if the question were—Is a man accountable for his external actions, that is, for the motions of his body, we might speak of natural necessity, or co-action, with propriety; but not so when the question relates to internal acts of the will. All reference to natural necessity, or co-action, in relation to such a question, is wholly irrelevant. No one doubts, and no one denies, that the motions of the body are controlled by the volitions of the mind, or by some external force. The advocates for the inherent activity and freedom of the mind, do not place them in the external sphere of matter, in the passive and necessitated movements of body: they seek not the living among the dead. But to do justice to these illustrious men, they did not attempt, as many of their followers have done, to pass off this freedom from external co-action for the freedom of the will. Indeed, neither of them contended for the freedom of the will at all, nor deemed such freedom requisite to render men accountable for their actions. This is an element which has been wrought into their system by the subsequent progress of human knowledge. Luther, it is well known, so far from maintaining the freedom of the mind, wrote a work on the “Bondage of the Human Will,” in reply to Erasmus. “I admit,” says he, “that man’s will is free in a certain sense; not because it is now in the same state it was in paradise, _but because it was made free originally, and may, through God’s grace, become so again_.”(3) And Calvin, in his Institutes, has written a chapter to show that “man, in his present state, is despoiled of freedom of will, and subjected to a miserable slavery.” He “was endowed with free will,” says Calvin, “by which, if he had chosen, he might have obtained eternal life.”(4) Thus, according to both Luther and Calvin, man was by the fall despoiled of the freedom of the will.