of matter consists in Extension in Length, Breadth, and Thickness. It is easie to comprehend that the Soul, or that which is capable of Thought, is a distinct substance from the Body. For it's manifest that Extension, whatever Division and Motion be conceiv'd in it, can never arrive to Rea∣son, Will or Sense. Wherefore that thinking thing which is in us, is necessarily a substance distinct from our Body.
Intellectual Notices, Volitions, and Actual Sensations, are Actually Modes of some substances Ex∣istence. But all the Divisions incidental to Extension can produce nothing but Figures: Nor all its various Motions, any thing but Relations of Distance: Therefore Extension is not capable of other Modifications. Therefore our Thought, Desire, Sensations of Pleasure, and Pain, are Modes of a Substances Existence, which is not a Body. Therefore the Soul is distinct from the Body, which being conceded, we thus demonstrate her Immortality.
No substance can be Annihilated by the Ordinary strength of Nature. For as nature cannot pro∣duce something out of nothing: So she cannot reduce something into nothing. Modifications of Beings may be Annihilated; Rotundity of a Body may be destroy'd; for that which is round may become square. But this roundness is not a Being, a Thing, a Substance; but only a Relation of E∣quality of distance, between the terminating parts of the Body, and that which is in the Center. Which relation changing, the Roundness is destroy'd, but the substance cannot be reduc'd to no∣thing. Now for the foremention'd Reasons the Soul is not a Mode of a Body's Existing. There∣fore she is immortal; and though the Body be dissolv'd into a Thousand parts of a different Na∣ture, and the structure of its Organs broke to pieces, since the Soul consists not in that structure, nor in any other Modification of matter, 'tis evident that the dissolution, and even the Annihilati∣on of the substance of an humane Body, were that Annihilation true, could not Annihilate the substance of our Soul. Let us add to this another proof of the immortality of the Soul, grounded upon the same Principle.
Though the Body cannot be reduc'd to nothing, because it is a substance, it may notwithstand∣ing die, and all its parts may be dissolv'd: Because Extension is divisible. But the Soul being a sub∣stance distinct from Extension, cannot be divided. For we cannot divide a Thought, a Desire, a Sensation of Pain, or Pleasure, as we may divide a square into two or four Triangles. Therefore the substance of the Soul is indissoluble, incorruptible, and consequently immortal, because unextended.
But if Monsieur de la Ville supposes that the Essence of Body consists in something besides Exten∣sion, how will he convince the Libertines that she is neither material nor mortal. They will main∣tain, that something wherein the Essence of Body consists, is capable of thinking, and that the sub∣stance which thinks is the same with that which is extended. If Monsieur de la Ville denies it, they'll show that he does it, without Reason, since according to his Principle, Body being something else than Extension; he has no distinct Idea of what that can be, and consequently cannot tell but that un∣known thing may be capable of Thought. Does he think to convince them, by saying as he does in his Book, that the Essence of Body is to have Parts without Extension? Certainly they will not take his Word for it; for finding it as hard to conceive parts without Extension, as indivisible Atoms, or Circles, without two Semi-circles, they must have more deference for him, than he has for God himself. For Monsieur de la Ville, in the last part of his Book, pretends that God him∣self cannot oblige us to belive contradictory things, such as are the Parts of a Body, without any Actual extension.
But the Libertines on their part would not fail of probable Reasons to confound the Soul with the Body. Experience, they'll say, teaches us, That the Body is capable of Feeling, Thinking, and Reasoning. 'Tis the Body which is sensible of Pleasure, and Pain. 'Tis the Brain which thinks and reasons. The weight of the Body makes heavy the Mind. Madness is a true distemper; and those who have most Wisdom lose it, when that part of the Brain, where it resides, is diseas'd. The Essences of Beings are unknown to us, and therefore Reason cannot discover of what they are susceptible. So that reason refers us to Experience, and Experience confounds the Soul with the Body, and teaches us, that this is capable of thinking: Such would be their Reasons.
And in Truth those who assure us, That the Essences of Being are unknown; and make it Cri∣minal for Philosophers to demonstrate Extension no Modification of Being, but the very Essence of Matter; would do well to consider the mischievous Consequences, deducible from their Principles; and not go to overthrow the only Demonstration we have, for the Distinction between the Soul and Body. For, in fine, the Distinction of these two Parts of our Selves, prov'd by clear Ideas, is the most Fruitful and necessary of all Truths in point of Philosophy, and perhaps of Divinity, and Chri∣stian Morality. But this Distinction is likewise exactly demonstrated in many Places of the Search after Truth . And I undertake to Monsieur de la Ville, notwithstanding his Answer fraught with Ambiguities, Figures, and Contradictions; or rather, I undertake to the Libertines, for as for him, I believe him so setled in his Faith, as not to want such sort of Proofs. I undertake, I say to the Libertines, That they will never find any Sophism in my Demonstration, That 'tis impossible to conceive it clearly and distinctly, without embracing it; and that all the Proofs they offer, to confound the Soul with the Body, are drawn from Senses; that they are obscure and confus'd, and can never perswade such as Judge of things by clear and distinct Ideas.
From this Principal, That the Essence of Body consists not in Extension, and that the Essences of things are unknown; I could still draw many other Consequences opposite to Faith: But that is not necessary; and I would rather, if it were possible, reconcile all false as well as true Philosophies with Religion. However impious and Heretical would be the Consequences I could deduce from