Nature examples: rain and digestion show necessity, fate, and harmony together

Examples are ready to hand in nature and in the arts. In nature: rain comes about by necessity, because the sun necessarily lifts vapors upward, and when condensation is added they are turned into rain, which, grown heavy, falls downward of necessity. And this happens by a certain fate, when vaporable earth, the sun's action, and condensation from the dispensation of heaven and of time concur; and at last it results in harmony, because the earth is renewed by rain, sprouts herbs, and nourishes animals.

The same appears in the excretions. For of necessity, while the blood is cooked, burned feces remain; and this happens by fate from the concurrence of many causes — namely bread eaten, heat acting in the narrow liver, and the spirit that separates — which causes met by fate; and this too results in harmony, and for the better, because when the blood is cleansed the feces (as melancholy) serve to excite hunger in the stomach lest the animal perish if it does not eat, and to stimulate the spirit toward fear of evils and toward contemplation.