These, and many other things of the same kind, are to be found in the writings of Day, and Edwards, and Collins, and Hobbes; and whosoever may be pleased to follow them, through all the doublings and windings of their logic, may do so at his leisure. It is sufficient for my present purpose to remark, that Edwards has included a number of different ideas in his definition of cause; and that he turns from the one to the other of these ideas, just as it suits the exigencies of his argument. It is in this way, as we have seen, that the famous maxim, that every change in nature must have a cause, has been made to serve his purpose. He did not look at a volition and an effect, so as to mark their differences narrowly, and to proceed in his reasonings according to them; he set out with the great and universal truth, that every change in the universe must have a cause; from which lofty position the differences of things in this nether world were invisible. Having secured this position to his entire satisfaction, being firmly persuaded in his own mind, that "nonentity could not bring forth," he supposed he had gained a strong foothold; and from thence he proceeded to reason downward to what actually takes place in this lower world! We are but "the humble servants and interpreters of nature," and we "can understand her operations only in so far as we have observed them." The necessitarian takes higher ground than this. He disdains the humble and patient task of observation. He plants his foot upon an eternal and immutable axiom; and, turning away from the study of what is, he magisterially pronounces what _must be_. It is easy to see how he constructs his system. Every change in nature must have a cause, says he; this is very true; there is no truth in the world more certain, according to the sense in which he frequently understands it. If he means to assert, that nothing, whether it be an entity, or an attribute, or a mode, can bring itself into existence, no one disputes his doctrine. It is most true, that there can be no choice without a mind that chooses, or an object in view of which it chooses; a mind, an object, and a desire, (if you please,) are the indispensable prerequisites, the invariable antecedents, to volition; but there is an immense chasm between this position and the doctrine, that the mind cannot put forth a volition, unless it is made to do so by the action of something else upon it. This immense chasm, the necessitarian can cross only by stepping over from one branch of his ambiguous proposition to another; he either does this, or he does not reach the point in controversy at all. SECTION VII. OF THE APPLICATION OF THE MAXIM THAT EVERY EFFECT MUST HAVE A CAUSE.