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The following essay was written several years ago; but I have hitherto refrained from publishing it, lest, after having done so, I should find that more mature thought had modified the conclusions which the essay sets forth. Judging, however, that it is now more than ever improbable that I shall myself be able to detect any errors in my reasoning, I feel that it is time to present the latter to the contemplation of other minds; and in doing so, I make this explanation only because I feel it desirable to state at the outset that the present treatise was written before the publication of Mr. Mill's treatise on the same subject. It is desirable to make this statement, first, because in several instances the trains of reasoning in the two essays are parallel, and next, because in other instances I have quoted passages from Mr. Mill's essay in connections which would be scarcely intelligible were it not understood that these passages are insertions made after the present essay had been completed. I have also added several supplementary essays which have been written since the main essay was finished.

It is desirable further to observe, that the only reason why I publish this edition anonymously is because I feel very strongly that, in matters of the kind with which the present essay deals, opinions and arguments should be allowed to produce the exact degree of influence to which as opinions and arguments they are entitled: they should be permitted to stand upon their own intrinsic merits alone, and quite beyond the shadow of that unfair prejudication which cannot but arise so soon as their author's authority, or absence of authority, becomes known. Notwithstanding this avowal, however, I fear that many who glance over the following pages will read in the "Physicus" of the first one a very different motive. There is at the present time a wonderfully wide-spread sentiment pervading all classes of society—a sentiment which it would not be easy to define, but the practical outcome of which is, that to discuss the question of which this essay treats is, in some way or other, morally wrong. Many, therefore, who share this sentiment will doubtless attribute my reticence to a puerile fear on my part to meet it. I can only say that such is not the case. Although I allude to this sentiment with all respect—believing as I do that it is an offshoot from the stock which contains all that is best and greatest in human nature—nevertheless it seems to me impossible to deny that the sentiment in question is as unreasonable as the frame of mind which harbours it must be unreasoning. If there is no God, where can be the harm in our examining the spurious evidence of his existence? If there is a God, surely our first duty towards him must be to exert to our utmost, in our attempts to find him, the most noble faculty with which he has endowed us—as carefully to investigate the evidence which he has seen fit to furnish of his own existence as we investigate the evidence of inferior things in his dependent creation. To say that there is one rule or method for ascertaining truth in the latter case, which it is not legitimate to apply in the former case, is merely a covert way of saying that the Deity, if he exists, has not supplied us with rational evidence of his existence. For my own part, I feel that such an assertion cannot but embody far more unworthy conceptions of a Personal God than are represented by any amount of earnest inquiry into whatever evidence of his existence there may be present; but, neglecting this reflection, if there is a God, it is certain that reason is the faculty by which he has enabled man to discover truth, and it is no less certain that the scientific methods have proved themselves by far the most trustworthy for reason to adopt. To my mind, therefore, it is impossible to resist the conclusion that, looking to this undoubted pre-eminence of the scientific methods as ways to truth, whether or not there is a God, the question as to his existence is both more morally and more reverently contemplated if we regard it purely as a problem for methodical analysis to solve, than if we regard it in any other light. Or, stating the case in other words, I believe that in whatever degree we intentionally abstain from using in this case what we know to be the most trustworthy methods of inquiry in other cases, in that degree are we either unworthily closing our eyes to a dreaded truth, or we are guilty of the worst among human sins—"Depart from us, for we desire not the knowledge of thy ways." If it is said that, supposing man to be in a state of probation, faith, and not reason, must be the instrument of his trial, I am ready to admit the validity of the remark; but I must also ask it to be remembered, that unless faith has some basis of reason whereon to rest, it differs in nothing from superstition; and hence that it is still our duty to investigate the rational standing of the question before us by the scientific methods alone. And I may here observe parenthetically, that the same reasoning applies to all investigations concerning the reality of a supposed revelation. With such investigations, however, the present essay has nothing to do, although, I may remark that if there is any evidence of a Divine Mind discernible in the structure of a professing revelation, such evidence, in whatever degree present, would be of the best possible kind for substantiating the hypothesis of Theism.

Such being, then, what I conceive the only reasonable, as well as the most truly moral, way of regarding the question to be discussed in the following pages, even if the conclusions yielded by this discussion were more negative than they are, I should deem it culpable cowardice in me for this reason to publish anonymously. For even if an inquiry of the present kind could ever result in a final demonstration of Atheism, there might be much for its author to regret, but nothing for him to be ashamed of; and, by parity of reasoning, in whatever degree the result of such an inquiry is seen to have a tendency to negative the theistic theory, the author should not be ashamed candidly to acknowledge his conviction as to the degree of such tendency, provided only that his conviction is an honest one, and that he is conscious of its having been reached by using his faculties with the utmost care of which he is capable.

If it is retorted that the question to be dealt with is of so ultimate a character that even the scientific methods are here untrustworthy, I reply that they are nevertheless the best methods available, and hence that the retort is without pertinence: the question is still to be regarded as a scientific one, although we may perceive that neither an affirmative nor a negative answer can be given to it with any approach to a full demonstration. But if the question is thus conceded to be one falling within the legitimate scope of rational inquiry, it follows that the mere fact of demonstrative certainty being here antecedently impossible should not deter us from instituting the inquiry. It is a well-recognised principle of scientific research, that however difficult or impossible it may be to prove a given theory true or false, the theory should nevertheless be tested, so far as it admits of being tested, by the full rigour of the scientific methods. Where demonstration cannot be hoped for, it still remains desirable to reduce the question at issue to the last analysis of which it is capable.

Adopting these principles, therefore, I have endeavoured in the following analysis to fix the precise standing of the evidence in favour of the theory of Theism, when the latter is viewed in all the flood of light which the progress of modern science—physical and speculative—has shed upon it. And forasmuch as it is impossible that demonstrated truth can ever be shown untrue, and forasmuch as the demonstrated truths on which the present examination rests are the most fundamental which it is possible for the human mind to reach, I do not think it presumptuous to assert what appears to me a necessary deduction from these facts—namely, that, possible errors in reasoning apart, the rational position of Theism as here defined must remain without material modification as long as our intelligence remains human.

London, 1878.

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ised not with us in the making of the world, and His ways are not the less excellent because they are past finding out....

"In all such cases, the superinducement of greater perfections and nobler qualities destroys nothing of the essence or perfections that were there before, unless there can be showed a manifest repugnancy between them; but all the proof offered for that is only that we cannot conceive how matter, without such superadded perfections, can produce such effects; which is, in truth, no more than to say matter in general, or every part of matter, as matter, has them not, but is no reason to prove that God, if He pleases, cannot superadd them to some parts of matter, unless it can be proved to be a contradiction that God should give to some parts of matter qualities and perfections which matter in general has not, though we cannot conceive how matter is invested with them, or how it operates by virtue of those new endowments; nor is it to be wondered that we cannot, whilst we limit all its operations to those qualities it had before, and would explain them by the known properties of matter in general, without any such induced perfections. For if this be a right rule of reasoning, to deny a thing to be because we cannot conceive the manner how it comes to be, I shall desire them who use it to stick to this rule, and see what work it will make both in divinity as well as philosophy, and whether they can advance anything more in favour of scepticism.

"For to keep within the present subject of the power of thinking and self-motion bestowed by omnipotent power in some parts of matter: the objection to this is, I cannot conceive how matter should think. What is the consequence? Ergo, God cannot give it a power to think. Let this stand for a good reason, and then proceed in other cases by the same.

"You cannot conceive how matter can attract matter at any distance, much less at the distance of 1,000,000 miles; ergo, God cannot give it such a power: you cannot conceive how matter should feel or move itself, or affect any material being, or be moved by it; ergo, God cannot give it such powers: which is in effect to deny gravity, and the revolution of the planets about the sun; to make brutes mere machines, without sense or spontaneous motion; and to allow man neither sense nor voluntary motion.

"Let us apply this rule one degree farther. You cannot conceive how an extended solid substance should think, therefore God cannot make it think: can you conceive how your own soul or any substance thinks? You find, indeed, that you do think, and so do I; but I want to be told how the action of thinking is performed: this, I confess, is beyond my conception; and I would be glad any one who conceives it would explain it to me.

"God, I find, has given me this faculty; and since I cannot but be convinced of His power in this instance, which, though I every moment experience in myself, yet I cannot conceive the manner of, what would it be less than an insolent absurdity to deny His power in other like cases, only for this reason, because I cannot conceive the manner how?...

"That Omnipotency cannot make a substance to be solid and not solid at the same time, I think with due reverence [diffidence?^[35]] we may say; but that a solid substance may not have qualities, perfections, and powers, which have no natural or visibly necessary connection with solidity and extension, is too much for us (who are but of yesterday, and know nothing) to be positive in.

"If God cannot join things together by connections inconceivable to us, we must deny even the consistency and being of matter itself; since every particle of it having some bulk, has its parts connected by ways inconceivable to us. So that all the difficulties that are raised against the thinking of matter, from our ignorance or narrow conceptions, stand not at all in the way of the power of God, if He pleases to ordain it so; nor prove anything against His having actually endowed some parcels of matter, so disposed as He thinks fit, with a faculty of thinking, till it can he shown that it contains a contradiction to suppose it.

"Though to me sensation be comprehended under thinking in general, in the foregoing discourse I have spoke of sense in brutes as distinct from thinking; because your lordship, as I remember, speaks of sense in brutes. But here I take liberty to observe, that if your lordship allows brutes to have sensation, it will follow, either that God can and doth give to some parcels of matter a power of perception and thinking, or that all animals have immaterial, and consequently, according to your lordship, immortal souls, as well as men; and to say that fleas and mites, &c., have immortal souls as well as men, will possibly be looked on as going a great way to serve an hypothesis....

"It is true, I say, 'That bodies operate by impulse, and nothing else,' and so I thought when I writ it, and can yet conceive no other way of their operation. But I am since convinced, by the judicious Mr. Newton's incomparable book, that it is too bold a presumption to limit God's power in this point by my narrow conceptions. The gravitation of matter towards matter, by way unconceivable to me, is not only a demonstration that God can, if He pleases, put into bodies powers and ways of operation above what can be derived from our idea of body, or can be explained by what we know of matter, but also an unquestionable and everywhere visible instance that He has done so. And therefore, in the next edition of my book, I will take care to have that passage rectified....

"As to self-consciousness, your lordship asks, 'What is there like self-consciousness in matter?' Nothing at all in matter as matter. But that God cannot bestow on some parcels of matter a power of thinking, and with it self-consciousness, will never be proved by asking how is it possible to apprehend that mere body should perceive that it doth perceive? The weakness of our apprehension I grant in the case: I confess as much as you please, that we cannot conceive how an unsolid created substance thinks; but this weakness of our apprehension reaches not the power of God, whose weakness is stronger than anything in man."

Lastly, Locke turns upon his opponent the power of the odium theologicum.

"Let it be as hard a matter as it will to give an account what it is that should keep the parts of a material soul together after it is separated from the body, yet it will be always as easy to give an account of it as to give an account what it is that shall keep together a material and immaterial substance. And yet the difficulty that there is to give an account of that, I hope, does not, with your lordship, weaken the credibility of the inseparable union of soul and body to eternity; and I persuade myself that the men of sense, to whom your lordship appeals in this case, do not find their belief of this fundamental point much weakened by that difficulty.... But you will say, you speak only of the soul; and your words are, that it is no easy matter to give an account how the soul should be capable of immortality unless it be a material substance. I grant it, but crave leave to say, that there is not any one of these difficulties that are or can be raised about the manner how a material soul can be immortal, which do not as well reach the immortality of the body....

"But your lordship, as I guess from your following words, would argue that a material substance cannot be a free agent; whereby I suppose you only mean that you cannot see or conceive how a solid substance should begin, stop, or change its own motion. To which give me leave to answer, that when you can make it conceivable how any created, finite, dependent substance can move itself, I suppose you will find it no harder for God to bestow this power on a solid than an unsolid created substance.... But though you cannot see how any created substance, solid or not solid, can be a free agent (pardon me, my lord, if I put in both, till your lordship please to explain it of either, and show the manner how either of them can of itself move itself or anything else), yet I do not think you will so far deny men to be free agents, from the difficulty there is to see how they are free agents, as to doubt whether there be foundation enough for the day of judgment."

Let us now, for the sake of contrast, turn to some passages which occur in the other train of reasoning.

"If we suppose only matter and motion first or eternal, thought can never begin to be. For it is impossible to conceive that matter, either with or without motion, could have originally in and from itself sense, perception, and knowledge; as is evident from hence, that then sense, perception, and knowledge must be a property eternally inseparable from matter and every particle of it." There is a double fallacy here. In the first place, conceivability is made the unconditional test of possibility; and, in the next place, it is asserted that unless every particle of matter can think, no collocation of such particles can possibly do so. This latter fallacy is further insisted upon thus:—"If they will not allow matter as matter, that is, every particle of matter, to be as well cogitative as extended, they will have as hard a task to make out to their own reasons a cogitative being out of incogitative particles, as an extended being out of unextended parts, if I may so speak.... Every particle of matter, as matter, is capable of all the same figures and motions of any other, and I challenge any one in his thoughts to add anything else to one above another." Now, as we have seen, Locke himself has shown in his other trains of argument that this challenge is thoroughly futile as a refutation of possibilities; but the point to which I now wish to draw attention is this—It does not follow because certain and highly complex collocations of material particles may be supposed capable of thinking, that therefore every particle of matter must be regarded as having this attribute. We have innumerable analogies in nature of a certain collocation of matter and force producing certain results which another somewhat similar collocation could not produce: in such cases we do not assume that all the resulting attributes of the one collocation must be presented also by the other—still less that these resulting attributes must belong to the primary qualities of matter and force. Hence, it is not fair to assume that thought must either be inherent in every particle of matter, or else not producible by any possible collocation of such particles, unless it has previously been shown that so to produce it by any possible collocation is in the nature of things impossible. But no one could refute this fallacy better than Locke himself has done in some of the passages already quoted from his other train of reasoning.

But to continue the quotation:—"If, therefore, it be evident that something necessarily must exist from eternity, it is also as evident that that something must necessarily be a cogitative being; for it is as impossible [inconceivable] that incogitative matter should produce a cogitative being, as that nothing, or the negation of all being, should produce a positive being or matter." Again,—"For unthinking particles of matter, however put together, can have [can be taught to have] nothing thereby added to them, but a new relation of position, which it is impossible [inconceivable] should give thought and knowledge to them."

It is unnecessary to multiply these quotations, for, in effect, they would all be merely repetitions of one another. It is enough to have seen that this able author undertakes to demonstrate the existence of a God, and that his whole demonstration resolves itself into the unwarrantable inference, that as we are unable to conceive how thought can be a property of matter, therefore a property of matter thought cannot be. That such an erroneous inference should occur in any writings of so old a date as those of Locke is not in itself surprising. What is surprising is the fact, that in the same writings, and in the course of the same discussion, the fallacy of this very inference is repeatedly pointed out and insisted upon in a great variety of ways; and it has been chiefly for the sake of showing the pernicious influence which preformed opinion may exert—viz., even to blinding the eyes of one of the most clear-sighted and thoughtful men that ever lived to a glaring contradiction repeated over and over again in the course of a few pages,—it has been chiefly for this reason that I have extended this Appendix to so great a length. I shall now conclude it by quoting some sentences which occur on the very next page after that from which the last quoted sentences were taken. Our author here again returns to his defence of the omnipotency of God; and as he now again thus personifies the sum total of possibility, his mind abruptly reverts to all its other class of associations. In this case the transition is particularly interesting, not only on account of its suddenness, but also because the correlations contemplated happen to be exactly the same in the two cases—viz., matter as the cause of mind, and mind as the cause of matter. Remember that on the last page this great philosopher supposed he had demonstrated the abstract impossibility of matter being the cause of mind on the ground of a causal connection being inconceivable, let us now observe what he says upon this page regarding the abstract possibility of mind being the cause of matter. "Nay, possibly, if we would emancipate ourselves from vulgar notions, and raise our thoughts as far as they would reach to a closer contemplation of things, we might be able to aim at some dim and seeming conception how matter might at first be made and begin to exist by the power of that eternal first being.... But you will say, Is it not impossible to admit of the making anything out of nothing, since we cannot possibly conceive it? I answer—No; because it is not reasonable to deny the power of an infinite being [this phrase, in the absence of hypothesis, i.e., in Locke's other train of reasoning, is of course equivalent to the sum-total of possibility] because we cannot comprehend its operations. We do not deny other effects upon this ground, because we cannot possibly conceive the manner of their production. We cannot conceive how anything but impulse of body can move body; and yet that is not a reason sufficient to make us deny it possible, against the constant experience we have of it in ourselves, in all our voluntary motions, which are produced in us only by the free action or thought of our minds, and are not, nor can be, the effects of the impulse or determination of the blind matter in or upon our own bodies; for then it could not be in our power or choice to alter it. For example, my right hand writes, whilst my left hand is still: what causes rest in one and motion in the other? Nothing but my will, a thought in my mind; my thought only changing, the right hand rests, and the left hands moves. This is matter of fact, which cannot be denied: explain this and make it intelligible, and then the next step will be to understand creation."^[36]

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