For want of consulting experience, for want or studying nature, for want of examining the material world, we have plunged ourselves into an intellectual vacuum, which we have peopled with chimeras, We have not stooped to consider matter, to study its different periods, to follow it through its numerous, changes. We have either ridiculously or knavishly confounded dissolution, decomposition, the separation of the elementary particles of bodies, with their radical destruction; we have been unwilling to see that the elements are indestructible; although the forms are fleeting, and depend upon transitory combination. We have not distinguished the change of figure, the alteration of position, the mutation of texture, to which matter is liable, from its annihilation, which is impossible; we have falsely concluded, that matter Was not a necessary being--that it commenced to exist--that this existence was derived from that which possessed nothing in common with itself--that that which was not substance, could give birth to that which is. Thus an unintelligible name has been substituted for matter, which furnishes us with true ideas of nature; of which at each instant we experience the influence, of which we undergo the action, of which we feel the power, and of which we should have a much better knowledge, if our abstract opinions did not continually fasten a bandage over our eyes.
Indeed the most simple notions of philosophy shew us, that, although bodies change and disappear, nothing is however lost in nature; the various produce of the decomposition of a body serves for elements, supplies materials, forms the basis, lays the foundation for accretions, contributes to the maintenance of other bodies. The whole of nature subsists, and is conserved only by the circulation, the transmigration, the exchange, the perpetual displacement of insensible atoms--the continual mutation of the sensible combinations of matter. It is by this palingenesia, this regeneration, that the great whole, the mighty macrocosm subsists; who, like the Saturn of the ancients, is perpetually occupied with devouring her own children.
It will not then be inconsistent with observation, repugnant to reason, contrary to good sense, to acknowledge that matter is self-existent; that it acts by an energy peculiar to itself; that it will never be annihilated. Let us then say, that matter is eternal; that nature has been, is, and ever will be occupied with producing and destroying; with doing and undoing; with combining and separating; in short, with following a system of laws resulting from its necessary existence. For every thing that she doth, she needs only to combine the elements of matter; these, essentially diverse, necessarily either attract or repel each other; come into collision, from whence results either their union or dissolution; by the same laws that one approximates, the other recedes from their respective spheres of action. It is thus that she brings forth plants, fossils, animals, men; thus she gives existence to organized, sensible, thinking beings, as well as to those who are destitute of either feeling or thought. All these act for the season of their respective duration, according to immutable laws, determined by their various properties; arising out of their configuration; depending on their masses; resulting from their ponderosity, &c. Here is the true origin of every thing which is presented to our view; this indicates the mode by which nature, according to her own peculiar powers, is in a state to produce all those astonishing effects which assail our wondering eyes; all that phenomena to which mankind is the witness; as well as all the bodies who act diversely upon the organs with which he is furnished, of which he can only judge according to the manner in which these organs are affected. He says they are good, when they are analogous to his own mode of existence--when they contribute to the maintenance of the harmony of his machine: he says they are bad, when they disturb this harmony. It is thus he ascribes views, ideas, designs, to the being he supposes to be the power by which nature is moved; although all the experience we are able to collect, unequivocally proves, that she acts after an invariable, eternal code of laws.