190. Many constant things exist, created that inconstant things may exist. Such constants are the ordained changes in the rising and setting of sun, moon and stars; their obscurations by interpositions called eclipses; the heat and light from them; the seasons of the year, called spring, summer, autumn and winter; the times of the day, morning, noon, evening and night; also atmospheres, waters and lands, viewed in themselves; the vegetative force in the plant kingdom, that and the reproductive in the animal kingdom; likewise what is constantly produced when these forces are set in action in accord with the laws of order. These and many more things existing from the creation are provided so that infinitely varying things may exist, for what varies can exist only in what is constant, fixed and certain. [2] Examples will illustrate this. The varieties of vegetation would not be possible unless sunrise and sunset and the resulting heat and light were constant. Harmonies are infinitely varied, and would not exist unless the atmospheres were constant in their laws and the ear in its form. Varieties of vision, which are also infinite, would not exist unless the ether in its laws and the eye in its organization were constant; equally so, colors, unless light was constant. The same is true of thoughts, words and actions, which are of infinite variety too; they could not exist, either, unless the organic forms of the body were constant. Must not a house be steady for a variety of things to be done in it by a person? So must a temple be for the various acts of worship, preaching, instruction and devout meditation to be possible in it. So in much else. [3] As for the varieties found in the constant, fixed and certain, they go on to infinity and have no end; no one thing in the whole universe or in any part of it is ever precisely the same as another, nor can be in the progress of things to eternity. Who disposes these varieties which proceed to infinity and eternity so that they have order unless it is He who created what is constant to the end that they may exist in it? And who can dispose the infinite varieties of life among men but He who is life itself, that is, love itself and wisdom itself? Except by His divine providence, which is like a continual creation, can the infinite affections of men and their thoughts thence and thus the men themselves be disposed so as to make one? Evil affections and the thoughts from them to make one devil which is hell, and good affections and the thoughts from them one Lord in heaven? We have said and shown several times before that the whole angelic heaven is like one man in the Lord's sight, an image and likeness of Him, and all hell over against it like one monstrous man. This has been said because some natural men seize on arguments for their madness in favor of nature and of one's own prudence from even the constant and fixed which must exist for the variable to exist in it.