CHAPTER XXV. WHETHER SLEEP OR DEATH APPERTAINS TO THE SOUL OR BODY.
Aristotle's opinion is, that both the soul and body sleep; and this proceeds from the evaporation in the breast, which doth steam and arise into the head, and from the aliment in the stomach, whose proper heat is cooled in the heart. Death is the perfect refrigeration of all heat in body; but death is only of the body, and not of the soul, for the soul is immortal. Anaxagoras thinks, that sleep makes the operations of the body to cease; it is a corporeal passion and affects not the soul. Death is the separation of the soul from the body. Leucippus, that sleep is only of the body; but when the smaller particles cause excessive evaporation from the soul's heat, this makes death; but these affections of death and sleep are of the body, not of the soul. Empedocles, that death is nothing else but separation of those fiery parts by which man is composed, and according to this sentiment both body and soul die; but sleep is only a smaller separation of the fiery qualities.
CHAPTER XXVI. HOW PLANTS INCREASE.
Plato and Empedocles believe, that plants are animals, and are informed with a soul; of this there are clear arguments, for they have tossing and shaking, and their branches are extended; when the woodmen bend them they yield, but they return to their former straightness and strength again when they are let loose, and even carry up weights that are laid upon them. Aristotle doth grant that they live, but not that they are animals; for animals are affected with appetite, sense, and reason. The Stoics and Epicureans deny that they are informed with a soul; by reason that all sorts of animals have either sense, appetite, or reason; but plants act fortuitously, and not by means of any soul. Empedocles, that the first of all animals were trees, and they sprang from the earth before the sun in its motion enriched the world, and before day and night were distinguished; but by the harmony which is in their constitution they partake of a masculine and feminine nature; and they increase by that heat which is exalted out of the earth, so that they are parts belonging to it, as embryos in the womb are parts of the womb. Fruits in plants are excrescences proceeding from water and fire; but the plants which lack water, when this is dried up by the heat of summer, shed their leaves; whereas they that have plenty thereof keep their leaves on, as the olive, laurel, and palm. The differences of their moisture and juice arise from the difference of particles and various other causes, and they are discriminated by the various particles that feed them. And this is apparent in vines for the excellence of wine flows not from the difference in the vines, but from the soil from whence they receive their nutriment.
CHAPTER XXVII. OF NUTRITION AND GROWTH.
Empedocles believes, that animals are nourished by the remaining in them of that which is proper to their own nature; they are augmented by the application of heat; and the subtraction of either of these makes them to languish and decay. The stature of men in this present age, if compared with the magnitude of those men which were first produced, is only a mere infancy.