Part 7

You will not fail, I suppose, said the Marchioness, to people these four moons, though they are only little subaltern planets, intended merely to give light to another during the night. Undoubtedly not, I replied. These little planets are not unworthy of inhabitants because they are unfortunate enough to be subjected to a larger planet.

I think, then, answered she, these satellites ought to be like colonies to Jupiter; that their inhabitants should, if possible, receive from him their laws and customs, and in return, render him some degree of homage, and always consider the great planet with respect. Would it not be needful, said I, for the moons occasionally to send deputies to Jupiter, who should take an oath of fidelity to him? I must own the little superiority we possess over the people in our moon makes me doubt whether Jupiter has much influence over the inhabitants of his satellites, and I think the only superiority he can aspire to is that of impressing them with awe. For of what a terrific size he must appear! To the planets nearest to him he looks sixteen hundred times larger than our moon appears to us. Truly if the Gauls in ancient times were afraid the heavens would fall and crush them to death, the inhabitants of this moon may with greater propriety apprehend the fall of Jupiter. Perhaps, she replied, that is the subject of alarm to them instead of the eclipses, which you assure me they see without fear; for as they are exempt from one folly, they must be subject to some other. Undoubtedly, answered I. The inventor of a third system, which I mentioned the other day, the celebrated Tycho Brahe, one of the greatest astronomers that ever lived, felt none of the vulgar terror at an eclipse; he was too much accustomed to study the nature of such a phenomenon; but what do you think he was afraid of instead?--If when he first went out of doors the first person he saw was an old woman; or if a hare crossed the path he had taken, Tycho Brahe thought the day would be unfortunate, and returning in haste to his apartment, he shut himself up without venturing to engage in any occupation whatever.

It would be unjust, said she, if such a man as he could not with impunity overcome the fear of an eclipse, for the inhabitants of the satellite we were speaking of, to be exempted from it on easier terms. We will not spare them: they shall submit to the general doom; and if they escape one error they shall be liable to another.

A difficulty has just occurred to me, continued she, you must remove it if you can: if the earth is so small in comparison of Jupiter, are we visible to the inhabitants of that planet? I am afraid we are unknown to them.

Really I think so, answered I; the earth is certainly too small to be distinguished by them.

We can only hope that in Jupiter there may be some astronomers who, after taking great pains to compose very excellent telescopes, and availing themselves of the finest nights for making their observations, may at length discover a very little planet which they had never seen before. At first the learned give an account of it in their journal; the rest of the people either hear nothing about it, or laugh at it when they do; the philosophers are discouraged and resolve not to mention it again, and but a few of the inhabitants who are more reasonable than the others will admit the idea. By and by they examine again; they see the little planet a second time; they are then assured of its reality, and even begin to think it has a motion round the sun. After observing it a thousand times, they find out that this revolution is performed in a year: and at last, when the learned have been at great pains to investigate the subject, the inhabitants of Jupiter know that our world is in the universe. The curious eagerly look through their telescopes, and with all their looking, can scarcely discern it.

Were it not disagreeable, said she, to know that from Jupiter we can only be seen through telescopes, I should amuse myself with the idea of all the glasses being pointed towards the earth as ours are towards him, and the mutual curiosity with which the two planets examine each other, and enquire, What world is that? What sort of people inhabit it?

Your imagination is too rapid, I replied; when the astronomers of Jupiter become acquainted with our earth, they do not become acquainted with us: they will not suspect the possibility of its being inhabited; if any one should venture to express such an idea, how they would laugh at him! Perhaps they would even persecute any philosopher who should maintain the opinion. After all I think the inhabitants of Jupiter are too much occupied in making discoveries on their own globe, to concern themselves about us. Jupiter is of such extent, that if they are adepts in navigation their Christopher Columbus must be fully employed. The inhabitants cannot know, even by reputation, a hundredth part of the other inhabitants. In Mercury, on the contrary, they are all neighbours, living familiarly together, and hardly considering the tour of their world more than a pleasant walk. If we are not visible to Jupiter, much less can Venus be so, who is at a still greater distance; and Mercury must be most out of its reach of all, being the smallest, and the most distant. However, the inhabitants can see Mars, their own four satellites, and Saturn with all his moons. Surely then they have planets enough to perplex their astronomers; nature, in kindness, has hid from them the rest.

What! cried the Marchioness; do you consider it a kindness? Without doubt, answered I. This great vortex contains sixteen planets; nature to spare us the trouble of studying the motions of so many, let us see but seven: is not that a favour? But not feeling the value of this mark of consideration, we have, with great pains, discovered the other nine, which had been concealed from us: our curiosity brings its own punishment in the laborious study which astronomy now requires.

I see, she replied, by the number of planets you mention, that Saturn must have five moons. You are right, said I; and it is but just that he should have so many, as he is thirty years in going round the sun; and in some parts the nights last fifteen years, for the same reason that on our globe, which turns in a year, there are nights, beneath the poles of six months' duration. But Saturn, being at twice the distance that Jupiter is from the sun, consequently ten times farther than the earth; his five moons, faintly as they are illumined, would not give sufficient light during his nights, he has therefore a wonderful resource, the only one of the kind we have discovered in the universe: 'tis a large circle or ring which environs the planet, and which, being sufficiently elevated to escape almost entirely the shadow of Saturn, reflects the sun's light on the darkened parts, and reflects it more strongly than all the five moons, because it is not so high as the lowest of them.

Really, said the Marchioness, with an air of deep reflection and astonishment, all this is managed with wonderful order; nature had certainly in these instances a view to the wants of living beings; this admirable disposition of light was not the effect of chance. Only the planets which are distant from the sun have been provided with moons--the Earth, Jupiter, and Saturn; for Venus did not require any; nor Mercury who already has too much light; whose nights are extremely short, and probably considered a greater blessing than even the days. But stop--I think Mars, who is farther from the sun than we, is without a moon. We cannot conceal the fact, I replied; he has none; but he doubtless has resources for the night which we are ignorant of. You have seen phosphorus; matters of that kind, whether liquid or dry, receive and imbibe the light from the sun, which they emit with some force when in the dark. Mars perhaps has high rocks of phosphorus that absorb, in the day-time, light enough to irradiate the night. You must own it would be an agreeable sight for the rocks to light up as soon as the sun was set, and without art, produce the most magnificent illuminations, that with all their radiance, would not have the inconvenience of casting any heat. In America, you know, there are birds which in the dark will afford light enough to read by: how can we tell whether Mars has not a great number of such birds, who, as soon as the night is come, disperse themselves on every side, and give an artificial day?

I am not satisfied, answered she, either with your rocks or birds. They would be pretty enough to be sure; but as nature has bestowed so many moons on Saturn and Jupiter, it shews that moons are necessary. I should have been very much pleased to find that all the worlds at a great distance from the sun had some, if Mars had not formed a disagreeable exception. Ah! replied I, if you were more deeply versed in philosophy you must accustom yourself to see exceptions to the best systems. We clearly see that some things are adapted in the most perfect manner to their end; others we accommodate as well as we can, or perhaps are obliged to content ourselves with knowing nothing about them. Let us do so with respect to Mars, since our researches are fruitless, and resolve to say no more about him.

We should be very much surprised, were we on Saturn, to see during the night a great ring, extending over our heads in a semi-circular form from one end of the horizon to the other; and by reflecting the light of the sun, would have the effect of a moon at every part of the circle. And are we not to have inhabitants in this great ring? said she, laughing. Though I am disposed to place them wherever I can, answered I, I confess I dare not tell you there are any there; this ring appears too irregular a dwelling. As for the five moons, we can't dispense with inhabitants for them. If the ring, however, were what some suppose, only a circle of moons, following each other very closely, with an equal motion, and the satellites, five of these moons escaped out of the ring, what numbers of worlds would the vortex of Saturn contain! Be that as it may, the people in Saturn are uncomfortable enough, even with the help of their ring. It gives then light, it is true; but what sort of light, at that immense distance from the sun? The sun himself, which appears to them a hundred times smaller than to us, seems but a little pale star, emitting but a feeble light or heat. And could they be transported to our coldest countries, such as Greenland and Lapland, you would see them ready to expire with the heat. If water were conveyed to their planet it would no longer be water, but a polished stone, and spirits of wine which never freeze here, would become hard as diamond.

Your description of Saturn petrifies me, said the Marchioness; though just now you almost threw me into a fever in talking of Mercury. Two worlds, answered I, which are at the different extremities of an immense vortex, must be totally unlike.

Then, replied she, the people are very wise in Saturn, for you told me they were all mad in Mercury. If they are not very wise, answered I, they are at least, I suppose, very phlegmatic. Their features could not accommodate themselves to a smile; they require a day's consideration before they answer any question, and they would think Cato of Atica unmanly and frivolous.

I am thinking, said she, that all the inhabitants of Saturn are slow; all those of Mercury are quick; amongst us some belong to the former class, some to the latter; may not that be in consequence of the earth's being placed just in the middle situation and participating of both extremes? The men of our world have no determined character; some are like the inhabitants of Mercury; others resemble those of Saturn, in short we are a compound of all the other planets. That's a good idea, replied I; we form such a ludicrous assemblage that it might easily be imagined we had been brought together from a variety of worlds. We are therefore very well situated for studying character, for this is an abstract of all the planets.

At any rate, rejoined the Marchioness, the situation of our world has one great convenience; the heat is not oppressive as at Mercury or Venus, nor the cold so benumbing as at Jupiter or Saturn. And we are in a part of the earth that is not subject to the greatest degrees of heat and cold experienced even on our own globe. If a certain philosopher returned thanks to his Creator for having formed him a man, and not a beast; a Greek and not a Barbarian; I think we ought to be grateful for being born on the most temperate planet in the universe, and in one of the most temperate parts of that planet. You ought likewise, madam, said I, to be thankful for being young, and not old; young and handsome, not young and ugly; a young and handsome French woman, not a young and handsome Italian: there are many things to excite your gratitude besides the temperature of your climate.

Ah! replied she, let us be grateful for every thing, even the vortex in which we are placed. The happiness we enjoy is but little, we must not lose any of it; it is well to cultivate an interest in the most common things. If we are only alive to strong emotions our pleasures will be few, seldom attainable, and dearly purchased. Promise me then, said I, that when such animated pleasures are within your reach you will think of the vortices and me, and not neglect us entirely. Very well, said she: but will philosophy always afford me new enjoyments? For to-morrow, at least, answered I: I have the fixed stars in reserve for you, which surpass all that you have yet examined.

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FIFTH EVENING.

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EVERY FIXED STAR IS A SUN, WHICH DIFFUSES LIGHT TO ITS SURROUNDING WORLDS.

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The Marchioness was very impatient to know what the fixed stars were. Are they inhabited, like the planets? said she, or are they not peopled? What can we make of them? Perhaps you would find out what they are, answered I, if you were to try. The fixed stars cannot be at less distance from the earth, than twenty-seven thousand, six hundred and sixty times the earth's distance from the sun, which is thirty-three millions of leagues: perhaps some astronomers would tell you they are farther still. The space between the Sun and Saturn, the most distant planet, is only three hundred and thirty millions of leagues; that is but a trifle in comparison of the distance between the sun, or earth, and the fixed stars, in fact, we don't take the trouble to compute it. Their light, as you perceive, is brilliant: if they received it from the sun, it must be very faint after travelling such an immense journey, and by reflecting it to us it would be still more weakened. It would be impossible for light, which had twice gone such a long space, to appear so bright as that of the fixed stars. They are therefore luminous in their nature, or in other words, they are so many suns.

Do I mistake, cried the Marchioness, or do I see your drift? Are you not going to say "the fixed stars are all suns: our sun is the centre of a vortex which turns around him; why should not each fixed star be also the centre of a vortex, turning round it? Our sun enlightens planets; why should not every fixed star likewise enlighten planets?" I need make no other answer, replied I, than Phœdrus made to Enone: thou hast named it.

But, rejoined she, you are making the universe so unbounded that I feel lost in it; I don't know where I am, not what I'm about. What! are they all vortices heaped in confusion on one another? Is every fixed star the centre of a vortex, as large perhaps as ours? The amazing space comprehending our sun and planets is but a little portion of the universe? An equal space, occupied by each of these vortices? The thought is fearful; overwhelming! For my part, said I, I think it very pleasing. Were the sky only a blue arch to which the stars were fixed, the universe would seem narrow and confined; there would not be room to breathe: now that we attribute an infinitely greater extent and depth to this blue firmament, by dividing it into thousands of vortices, I seem to be more at liberty; to live in a freer air; and nature appears with astonishingly encreased magnificence. Creation is boundless in treasures; lavish in endowments. How grand the idea of this immense number of vortices, the middle of each occupied by a sun, encompassed with planets which turn around him! The inhabitants of one of these numberless vortices, on every side behold the suns of surrounding vortices, although the planets belonging to them are invisible, as the light they receive from their suns cannot penetrate beyond their own vortex.

You are directing my eye, answered she, to an interminable perspective. I see, plainly enough, the inhabitants of the earth; then you enable me to discover, with somewhat less clearness, those of the moon and other planets contained in our vortex. After all that you require me to view the people that dwell in planets belonging to other vortices. I must confess they are so much in the back ground that with all my efforts they are scarcely perceptible to me. In short do they not seem almost annihilated by the very expression you are obliged to make use of in describing them? You must call them the inhabitants of one of the planets, contained in one, out of the infinity of vortices. Surely the very idea of ourselves is as nothing when such a description is applied to us, when we are thus lost amongst millions of worlds. For my part, the earth begins to diminish into such a speck, that in future I shall hardly consider any object worthy of eager pursuit. Surely people, who form unnumbered schemes of aggrandizement, who are wearing themselves out in following up projects of ambition, are ignorant of the vortices. I think my augmentation of knowledge will encrease my idleness, and when I am reproached for being indolent I shall reply, Ah! if you knew the history of the fixed stars! Alexander could not have been acquainted with it, answered I; for a certain author, who believes that the moon is inhabited, tells us very seriously that it was impossible for Aristotle to avoid receiving so rational an opinion, (could Aristotle be ignorant of any truth?) but that he never disclosed it for fear of displeasing Alexander, who would have been miserable to hear of a world that he could not subjugate. There would have been a still greater reason for keeping the vortices of the fixed stars a secret; if any body in those days had known them, they would not have thought of ingratiating themselves with the monarch by talking of them. It is unfortunate that I who am acquainted with the system should not be able to reap any benefit from it. According to your reasoning it will only be an antidote to the disquietudes of ambition; that is not my malady. The weakness I am most addicted to is an excessive admiration of beauty, and I fear the vortices will have no power to assist me in overcoming it. The immense number of worlds destroys the grandeur of this, but it does not lessen the charms of a fine pair of eyes or a beautiful mouth, they retain their power in spite of all the worlds that can be created.

Love is a strange thing, said she, laughing; it escapes every corrective; there is no system that can abate its influence. But answer me seriously; have you sufficient reason for believing this system? To me it appears to rest on an uncertain foundation. A fixed star is of a luminous nature like the sun, therefore you say it must, like the sun, be a centre to a vortex containing planets which travel round the sun. Now, is that a necessary consequence?