SECT. XVII. Of the Sun.
But besides the constant course by which the sun forms days and nights it makes us sensible of another, by which for the space of six months it approaches one of the poles, and at the end of those six months goes back with equal speed to visit the other pole. This excellent order makes one sun sufficient for the whole earth. If it were of a larger size at the same distance, it would set the whole globe on fire and the earth would be burnt to ashes; and if, at the same distance, it were lesser, the earth would be all over frozen and uninhabitable. Again, if in the same magnitude it were nearer us, it would set us in flames; and if more remote, we should not be able to live on the terrestrial globe for want of heat. What pair of compasses, whose circumference encircles both heaven and earth, has fixed such just dimensions? That star does no less befriend that part of the earth from which it removes, in order to temper it, than that it approaches to favour it with its beams. Its kind, beneficent aspect fertilises all it shines upon. This change produces that of the seasons, whose variety is so agreeable. The spring silences bleak frosty winds, brings forth blossoms and flowers, and promises fruits. The summer yields rich harvests. The autumn bestows the fruits promised by the spring. The winter, which is a kind of night wherein man refreshes and rests himself, lays up all the treasures of the earth in its centre with no other design but that the next spring may display them with all the graces of novelty. Thus nature, variously attired, yields so many fine prospects that she never gives man leisure to be disgusted with what he possesses.
But how is it possible for the course of the sun to be so regular? It appears that star is only a globe of most subtle flame. Now, what is it that keeps that flame, so restless and so impetuous, within the exact bounds of a perfect globe? What hand leads that flame in so strait a way and never suffers it to slip one side or other? That flame is held by nothing, and there is no body that can either guide it or keep it under; for it would soon consume whatever body it should be enclosed in. Whither is it going? Who has taught it incessantly and so regularly to turn in a space where it is free and unconstrained? Does it not circulate about us on purpose to serve us? Now if this flame does not turn, and if on the contrary it is our earth that turns, I would fain know how it comes to be so well placed in the centre of the universe, as it were the focus or the heart of all nature. I would fain know also how it comes to pass that a globe of so subtle matter never slips on any side in that immense space that surrounds it, and wherein it seems to stand with reason that all fluid bodies ought to yield to the impetuosity of that flame.
In fine, I would fain know how it comes to pass that the globe of the earth, which is so very hard, turns so regularly about that planet in a space where no solid body keeps it fast to regulate its course. Let men with the help of physics contrive the most ingenious reasons to explain this phenomenon; all their arguments, supposing them to be true, will become proofs of the Deity. The more the great spring that directs the machine of the universe is exact, simple, constant, certain, and productive of abundance of useful effects, the more it is plain that a most potent and most artful hand knew how to pitch upon the spring which is the most perfect of all.
SECT. XVIII. Of the Stars.
But let us once more view that immense arched roof where the stars shine, and which covers our heads like a canopy. If it be a solid vault, what architect built it? Who is it that has fixed so many great luminous bodies to certain places of that arch and at certain distances? Who is it that makes that vault turn so regularly about us? If on the contrary the skies are only immense spaces full of fluid bodies, like the air that surrounds us, how comes it to pass that so many solid bodies float in them without ever sinking or ever coming nearer one another? For all astronomical observations that have been made in so many ages not the least disorder or irregular motion has yet been discovered in the heavens. Will a fluid body range in such constant and regular order bodies that swim circularly within its sphere? But what does that almost innumerable multitude of stars mean? The profusion with which the hand of God has scattered them through His work shows nothing is difficult to His power. He has cast them about the skies as a magnificent prince either scatters money by handfuls or studs his clothes with precious stones. Let who will say, if he pleases, that the stars are as many worlds like the earth we inhabit; I grant it for one moment; but then, how potent and wise must He be who makes worlds as numberless as the grains of sand that cover the sea-shore, and who, without any trouble, for so many ages governs all these wandering worlds as a shepherd does a flock of sheep? If on the contrary they are only, as it were, lighted torches to shine in our eyes in this small globe called earth, how great is that power which nothing can fatigue, nothing can exhaust? What a profuse liberality it is to give man in this little corner of the universe so marvellous a spectacle!
But among those stars I perceive the moon, which seems to share with the sun the care and office of lighting us. She appears at set times with all the other stars, when the sun is obliged to go and carry back the day to the other hemisphere. Thus night itself, notwithstanding its darkness, has a light, duskish indeed, but soft and useful. That light is borrowed from the sun, though absent: and thus everything is managed with such excellent art in the universe that a globe near the earth, and as dark as she of itself, serves, nevertheless, to send back to her, by reflection, the rays it receives from the sun; and that the sun lights by means of the moon the people that cannot see him while he must light others.
It may be said that the motion of the stars is settled and regulated by unchangeable laws. I suppose it is; but this very supposition proves what I labour to evince. Who is it that has given to all nature laws at once so constant and so wholesome, laws so very simple, that one is tempted to believe they establish themselves of their own accord, and so productive of beneficial and useful effects that one cannot avoid acknowledging a marvellous art in them? Whence proceeds the government of that universal machine which incessantly works for us without so much as our thinking upon it? To whom shall we ascribe the choice and gathering of so many deep and so well conceited springs, and of so many bodies, great and small, visible and invisible, which equally concur to serve us? The least atom of this machine that should happen to be out of order would unhinge all nature. For the springs and movements of a watch are not put together with so much art and niceness as those of the universe. What then must be a design so extensive, so coherent, so excellent, so beneficial? The necessity of those laws, instead of deterring me from inquiring into their author, does but heighten my curiosity and admiration. Certainly, it required a hand equally artful and powerful to put in His work an order equally simple and teeming, constant and useful. Wherefore I will not scruple to say with the Scripture, “Let every star haste to go whither the Lord sends it; and when He speaks let them answer with trembling, Here we are,” Ecce adsumus.
SECT. XIX. Of Animals, Beasts, Fowl, Birds, Fishes, Reptiles, and Insects.
But let us turn our eyes towards animals, which still are more worthy of admiration than either the skies or stars. Their species are numberless. Some have but two feet, others four, others again a great many. Some walk; others crawl, or creep; others fly; others swim; others fly, walk, or swim, by turns. The wings of birds, and the fins of fishes, are like oars, that cut the waves either of air or water, and steer the floating body either of the bird, or fish, whose structure is like that of a ship. But the pinions of birds have feathers with a down, that swells in the air, and which would grow unwieldy in the water. And, on the contrary, the fins of fishes have sharp and dry points, which cut the water, without imbibing it, and which do not grow heavier by being wet. A sort of fowl that swim, such as swans, keep their wings and most of their feathers above water, both lest they should wet them and that they may serve them, as it were, for sails. They have the art to turn those feathers against the wind, and, in a manner, to tack, as ships do when the wind does not serve. Water-fowls, such as ducks, have at their feet large skins that stretch, somewhat like rackets, to keep them from sinking on the oozy and miry banks of rivers.