As God has made the soul immortal, he has made the universe infinite, if it is true that eternity is nothing other than unlimited duration and infinity is space without limits. Suppose the universe were not infinite: God himself would be finite, because he could not be where there is nothing, and he could not increase the size of the universe without adding to his own size and come to be where he had not been before.

I had scarcely entered the room when I saw on my table an open book I had not put there. It was the works of Cardano. I did not intend to read it, but my gaze fell as though compelled on a story told by that philosopher. He writes that he was studying one night by candlelight when he saw two tall old men come in through the closed doors of his room. He asked them many questions, and they finally told him they were from the Moon; whereupon they disappeared. I was so surprised, both by the book that had put itself on my table and by the page it was open to, that I took this chain of events for an inspiration from God, who was urging me to tell people that the Moon is a world.

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You will say, 'How can chance assemble in one place all the things necessary to produce an oak tree?' My answer is that it would be no miracle if the matter thus arranged had not formed an oak. But it would have been a very great miracle if, once the matter was thus arranged, an oak had not been formed. A few less of some shapes, and it would have been an elm, a poplar, a willow, an elder, heather or moss. A little more of some other shapes and it might have been a sensitive plant, an oyster in its shell, a worm, a fly, a frog, a sparrow, an ape or a man.

Even if a king defeats his enemy in battle, that still doesn't settle anything. There are other, less numerous armies of philosophers and scientists, and their contests determine the true triumph or defeat of nations. One scholar is matched with another; one creative mind with another; and one judicious temperament with his counterpart. A victory won on that field counts for three won by force of arms.

You are now bearing the punishment for the shortcomings of your world. Here, as in your world, there are benighted people who cannot tolerate thinking about things they are not accustomed to. But you realize that you are being treated here the same as there. If someone from this world came to yours with the audacity to call himself a man, your learned men would stifle him for being a monster or a monkey possessed by the Devil.

I constructed a machine that I imagined was capable of taking me as high as I wanted to go. I launched myself into the air from the edge of a cliff. But I had miscalculated, and I crashed into the valley below. I returned to my room, quite rumpled but not discouraged. I took some beef marrow and slathered it all over my body, which was bruised from head to toe. I fortified my courage with a bottle of cordial and went back for my machine.

Most men judge only by their senses and let themselves be persuaded by what they see. Just as the man whose boat sails from shore to shore thinks he is stationary and that the shore moves, men turn with the earth under the sky and have believed that the sky was turning above them. On top of that, insufferable vanity has convinced humans that nature has been made only for them, as though the sun, a huge body four hundred and thirty-four times as large as the earth, had been lit only to ripen our crab apples and cabbages. I am not one to give in to the insolence of those brutes. I think the planets are worlds revolving around the sun and that the fixed stars are also suns that have planets revolving around them. We can't see those worlds from here because they are so small and because the light they reflect cannot reach us. How can one honestly think that such spacious globes are only large, deserted fields? And that our world was made to lord it over all of them just because a dozen or so vain wretches like us happen to be crawling around on it? Do people really think that because the sun gives us light every day and year, it was made only to keep us from bumping into walls? No, no, this visible god gives light to man by accident, as a king's torch accidentally shines upon a working man or burglar passing in the street."

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A present loses its value when it is given without the choice of the person who receives it. Caesar was given death, and so was Cassius. However, Cassius was indebted to the slave who gave it to him, while Caesar owed nothing to his murderers, because they forced him to take it.

How do you think a spade, sword or dagger wounds us? Because the metal is a form of matter in which the particles are closer and more tightly bound together than those of your flesh. The metal forces flesh to yield to strength, just as a galloping squadron penetrates a battle line that is of much greater extent. And why is a piece of hot metal hotter than a piece of burning wood? Because the metal contains more heat in a smaller volume. The particles in the metal are more compact than those in the wood.

When I opened a box, I found inside something made of metal, somewhat like our clocks, full of an endless number of little springs and tiny machines. It was indeed a book, but it was a miraculous one that had no pages or printed letters. It was a book to be read not with eyes but with ears. When anyone wants to read, he winds up the machine with a large number of keys of all kinds. Then he turns the indicator to the chapter he wants to listen to. As though from the mouth of a person or a musical instrument come all the distinct and different sounds that the upper-class Moon-beings use in their language. When I thought about this marvelous way of making books, I was no longer surprised that the young people of that country know more at the age of sixteen or eighteen than the greybeards of our world. They can read as soon as they can talk and are never at a loss for reading material. In their rooms, on walks, in town, during voyages, on foot or on horseback, they can have thirty books in their pockets or hanging on the pommels of their saddles. They need only wind a spring to hear one or more chapters or a whole book, if they wish. Thus you always have with you all the great men, both living and dead, who speak to you in their own voices.

I could scarcely keep from laughing at this scrupulous manner of waging war. I cited the European example as a much more forceful policy. A monarch is careful not to overlook any advantage for victory. She had some questions about that: "Tell me," she said, "do your princes have no other pretext for war than might makes right?" "Yes," I answered, "the justice of their cause."
"Why, then," she continued, "do they not choose to be reconciled by impartial judges? And if it is determined that both sides are in the right, then why not maintain the status quo? Or why not play a game of gin rummy for the town or province they're arguing over? But no, while they cause the death of four million men who are better than they, they stay in their strategy rooms making light of the way the poor fellows are being massacred. But I'm wrong to criticize the valour of your brave men. It's important to die for one's country when it means being the subject of a king who wears a ruffled collar or a pleated one."

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The King's daughter didn't talk to me any more about military matters at the time, because she was afraid of being discovered alone with me early in the morning. The reason was not that immodesty is a crime in that country. On the contrary, any man — except for convicted felons — can ask what he wants of any woman, and any woman can bring suit against a man who refuses her. But the King's daughter didn't dare come to see me publicly because she said the priests had preached at the last sacrifice that women were mainly the ones who were saying I was a man. The priests claimed that women were disguising their execrable desire to mingle with animals and shamelessly commit sins against nature with me. That was why I went a long time without seeing her or any other female.