64. Thus each organic living body is a species of divine machine, or a natural automaton, infinitely surpassing all artificial automata. A machine made by human art is not a machine in all its parts. For example, the tooth of a brass wheel has parts or fragments which are not artificial to us; they have nothing which marks the machine in their relation to the use for which the wheel is designed; but natural machines—that is, living bodies—are still machines in their minutest parts, ad infinitum. This makes the difference between nature and art, that is to say, between the Divine art and ours.
65. And the author of nature was able to exercise this divine and infinitely wonderful art, inasmuch as every portion of nature is not only infinitely divisible, as the ancients knew, but is actually subdivided without end—each part into parts, of which each has its own movement. Otherwise, it would be impossible that each portion of matter should express the universe.
66. Whence it appears that there is a world of creatures, of living (things), of animals, of Entelechies, of souls, in the minutest portion of matter.
67. Every particle of matter may be conceived as a garden of plants, or as a pond full of fishes. But each branch of each plant, each member of each animal, each drop of their humors, is in turn another such garden or pond.
68. And although the earth and the air embraced between the plants in the garden, or the water between the fishes of the pond, are not themselves plant or fish, they nevertheless contain such, but mostly too minute for our perception.
69. So there is no uncultured spot, no barrenness, no death in the universe—no chaos, no confusion, except in appearance, as it might seem in a pond at a distance, in which one should see a confused motion and swarming, so to speak, of the fishes of the pond, without distinguishing the fishes themselves.
70. We see, then, that each living body has a governing Entelechy, which in animals is the soul of the animal. But the members of this living body are full of other living bodies—plants, animals—each of which has its Entelechy, or regent soul.
71. We must not, however, suppose—as some who misapprehended my thought have done—that each soul has a mass or portion of matter proper to itself, or forever united to it, and that it consequently possesses other inferior living existences, destined forever to its service. For all bodies are in a perpetual flux, like rivers. Their particles are continually coming and going.
72. Thus the soul does not change its body except by degrees. It is never deprived at once of all its organs. There are often metamorphoses in animals, but never Metempsychosis—no transmigration of souls. Neither are there souls entirely separated (from bodies), nor genii without bodies. God alone is wholly without body.
73. For which reason, also, there is never complete generation nor perfect death—strictly considered—consisting in the separation of the soul. That which we call generation, is development and accretion; and that which we call death, is envelopment and diminution.