This string of blunders needs no refutation, as no reader who has a modicum of common sense can be deceived by what is evidently false. Yet, as to the assertion that “there is and can be no physical real thing which is absolutely simple,” it must be observed that there are two kinds of simplicity, as there are two kinds of composition. A being is physically simple when it is free from physical composition; whilst it is metaphysically simple, if it has no metaphysical components. Now, God alone is free from metaphysical as well as physical composition; and therefore God alone is absolutely simple. Hence, created beings, though physically simple, are always metaphysically compound.

What follows is a curious specimen of Mr. Stallo's philosophical resources. He says: “Leibnitz places at the head of his Monadology the principle that there must be simple substances, because there are compound substances. Necesse est, he says, dari substantias simplices, quia dantur compositæ. This enthymeme, though it has been long since exploded in metaphysics, is still regarded by many physicists as proof of the real existence of absolutely simple constituents of matter. Nevertheless, it is obvious that it is nothing but a vicious paralogism—a fallacy of the class known in logic as fallacies of the suppressed relative. The existence of a compound substance certainly proves the existence of component parts, which, relatively to this substance, are simple. But it proves nothing whatever as to the simplicity of these parts in themselves” (p. 226).

Our reader will ask when and how Leibnitz' enthymeme has been “exploded.” We shall inform him that it has not been exploded, though the attempt has often been made; because in the whole arsenal of metaphysics no powder could be found that would produce the explosion. The enthymeme, therefore, is as good and unanswerable now as it was in Leibnitz' time; and it will be as good and unanswerable hereafter, notwithstanding Mr. Stallo's efforts against it. He says that “it is nothing but a vicious paralogism”; but he himself, while endeavoring to prove this latter assertion, resorts to a paralogism (vicious, of course) which we may call “fallacy of the suppressed absolute.” The existence of a compound proves the existence of its component parts, as the author [pg 799] admits. These parts are either compound or simple. If simple, then there are simple substances. If compound, then they have components; and these parts are again either compound or simple. We must therefore either admit simple substances, or continue our analysis by further subdivisions of the compound substance without any chance of ever coming to an end. But if the analysis cannot come to an end, the compound has no first components; and thus it will be false that “the existence of a compound substance proves the existence of the component parts.” The fallacy of the author consists in stopping his analysis of the compound before he has reached the first components. If the parts he has reached are still compound substances, why does he not examine their composition and point out their components? For no other reason, we presume, than that he did not wish to meet with an absolute substantial unit, which he was sure to find at the end of the process. His argument is therefore nothing but a despicable fraud.

In his fourth article (January, 1874) Mr. Stallo remarks that “the recent doctrine of the correlation and mutual convertibility of the physical forces, as a part of the theory of the conservation of energy, has shaken, if not destroyed, the conception of a multiplicity of independent original forces” (p. 350). Of course, there are men whose convictions can be shaken, or even destroyed, by the sophistic generalizations of the modern school; but there are men also whose convictions rest on too solid a ground to be destroyed or shaken; and these latter have ere now challenged the abettors of the “recent doctrine” to clear up their case with something like logical precision—a thing which modern thinkers must have found impossible, since they have constantly ignored the challenge. We have proved elsewhere[185] that “the mutual convertibility of physical forces,” as understood by the champions of the theory, confounds movement with action and the effects with their causes. The facts on which the theory is based are true; but the theory itself is false, for it attributes to the powers by which the phenomena are produced what exclusively belongs to “the phenomena”, besides deforming the nature of the phenomena themselves by denying the production and extinction of movement. It is plain that such a theory can have no weight in philosophy; and it is no less plain that no philosopher will, for the sake of the new theory, renounce his firm conviction concerning “the multiplicity of independent original forces.”

“I have endeavored,” says the author, “to show that there are no absolute constants of mass; that both the hypothesis of corpuscular atoms and that of centres of forces are growths of a confusion of the intellect, which mistakes conceptual elements of matter for real elements; that these elements—force and mass, or force and inertia—are not only inseparable, as is conceded by the more thoughtful among modern physicists, but that neither of these elements has any reality as such, each of them being simply the conceptual correlate of the other, and thus the condition both of its realization in thought and of its objectivation to sense” (p. 350).

As we have already discussed all the points which the author vainly endeavored to establish, we shall only remind the reader that the matter and the form have no separate existence; and therefore have no reality in nature, unless they are together. The [pg 800] author, therefore, is right when affirming that neither of them has any reality as such; but he is wrong in inferring that they have no reality as united. As action has no reality without passion, nor passion without action, so also matter has no reality without form, nor form without matter; but as action producing passion is real, so also is a form actuating matter; and as passion is no less real than the action whence it proceeds, so matter also is no less real than the form by which it is actuated. Both are, of course, only metaphysical realities.

The author says: “The mathematical treatment of mechanical problems, from the nature of the methods, necessitates the fiction that force and mass are separate and distinct terms” (p. 351). By no means. It is not the nature of the methods, but the nature of the things that compels the distinction of the two terms. Their distinction, therefore, is not a “fiction.” But the author's remark has no bearing on the question of the constitution of matter; for mechanical forces are not substantial forms.

He adds: “A material object is in every one of its aspects but one term of a relation; its whole being is a presupposition of correlates without.... Every change of a body, therefore, presupposes a corresponding change in its correlates. If the state of any material object could be changed without a corresponding change of state in other objects without, this object would, to that extent, become absolute. But this is utterly unthinkable, and therefore utterly impossible, as we have already seen.... Mechanically speaking, all force, properly so-called—i.e., all potential energy—is energy of position.... Whatever energy is spent in actual motion is gained in position; ... thus we are led to the principle of the conservation of energy” (p. 351).

This is a heap of absurdities. If a material object is the term of a relation, it is absolute in itself, as we have shown. Again, the change of a body presupposes only the exertion of active power, and not the change of another body, as the author imagines. That the absolute is unthinkable he has failed to prove. Lastly, mechanical force, properly so-called, is the product of a mass into its velocity, whilst “energy of position” is a myth.[186]

But the author says: “Force is a mere inference from the motion itself under the universal conditions of reality, and its measure, therefore, is simply the effect for which it is postulated as a cause; it has no other existence. The only reality of force and of its action is the correspondence between the physical phenomena in conformity to the principle of the essential relativity of all material existence. That force has no independent reality is so plain and obvious that it has been proposed by some thinkers to abolish the term force, like the term cause, altogether. However desirable this might be in some respects, it is impossible, for the reason that the concept force, when properly interpreted in terms of experience, is valid; and, if its name were abolished, it would instantly reappear under another name.... The reality of force is purely conceptual; ... it is not a distinct and individual tangible or intangible entity” (p. 354).