Cixin Liu Dark Forest Quotes

If I destroy you, what business is it of yours?

The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. Even breathing is done with care. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. If he finds other life—another hunter, an angel or a demon, a delicate infant or a tottering old man, a fairy or a demigod—there’s only one thing he can do: open fire and eliminate them. In this forest, hell is other people. An eternal threat that any life that exposes its own existence will be swiftly wiped out. This is the picture of cosmic civilization. It’s the explanation for the Fermi Paradox.

It’s a wonder to be alive. If you don’t understand that, how can you search for anything deeper?

Make time for civilization, for civilization won't make time.

Without the fear of heights, there can be no appreciation for the beauty of high places.

Time is the one thing that can’t be stopped. Like a sharp blade, it silently cuts through hard and soft, constantly advancing. Nothing is capable of jolting it even the slightest bit, but it changes everything.

Staying alive is not enough to guarantee survival. Development is the best way to ensure survival.

For the majority of people, what they love exists only in the imagination. The object of their love is not the man or woman of reality, but what he or she is like in their imagination. The person in reality is just a template used for the creation of this dream lover. Eventually, they find out the differences between their dream lover and the template. If they can get used to those differences, then they can be together. If not, they split up. It’s as simple as that. You differ from the majority in one respect: You didn’t need a template.

Ten thousand times the web could be destroyed, and ten thousand times the spider would rebuild it. There was neither annoyance nor despair, nor any delight, just as it had been for a billion years.

do you know what the greatest expression of regard for a race or civilization is?” “No, what?” “Annihilation. That’s the highest respect a civilization can receive. They would only feel threatened by a civilization they truly respect.

My dad said that people who are sensitive to beauty are good by nature, and if they’re not good, then they can’t appreciate beauty.

No,no.Don't say where we are!Once we know where we are,then the world becomes as narrow as a map.When we don't know,the world feels unlimited.

Fate lies within the light cone.

Once we know where we are, then the world becomes as narrow as a map. When we don’t know, the world feels unlimited.

When twilight fades, you can see the stars. When dawn fades, all that’s left is…” “All that’s left is the harsh light of reality.

Growing up, his father had used silence rather than speech to educate him, and words were merely the punctuation between the silences.

Life needed smoothness, but it also needed direction. One could not always be returning to the point of origin.

You know how the joke goes: On the way to the execution ground, a condemned criminal complained that it was going to rain, and the executioner said, ‘What have you got to worry about? We’re the ones who’ve got to go back through it!

Mom, I'm going to be a firefly.

The whole universe is in darkness, but we remain lit. We're a tiny bird tied to a branch in the dark forest, with a spotlight trained on on us.

Of course she's not afraid. She knows that the sun will rise again tomorrow.

In this forest, hell is other people. An eternal threat that any life that exposes its own existence will be swiftly wiped out. This is the picture of cosmic civilization. It’s the explanation for the Fermi Paradox.

Perhaps the outside world really was something akin to a quantum state, and did not exist unless he observed it.

You’re one of the calmest people I’ve ever met.” “The calmness comes from cynicism. There’s not much in the world that can make me care.

I have a dream that one day brilliant sunlight will illuminate the dark forest

The past was like a handful of sand you thought you were squeezing tightly, but which had already run out through the cracks between your fingers. Memory was a river that had run dry long ago, leaving only scattered gravel in a lifeless riverbed.

The stern of the ship faced the Solar System, where the sun was by now no more than a yellow star just a bit brighter than the rest. The peripheral spiral arm of the Milky Way lay in this direction, its stars sparse. The depth and expanse of deep space exhibited an arrogance that left no support for the mind or the eyes. “Dark. It’s so fucking dark,” the captain murmured, and then shot himself.

This is the difference between an ordinary scribe and a literary writer. The highest level of literary creation is when the characters in a novel possess life in the mind of the writer. The writer is unable to control them, and might not even be able to predict the next action they will take. We can only follow them in wonder to observe and record the minute details of their lives like a voyeur.

Earth’s suitability for human life was no coincidence, much less an effect of the anthropic principle, but rather was an outcome of the long-term interaction between the biosphere and the natural environment,

There are no permanent enemies or comrades, only permanent duty.

Once I know where I am, then the world becomes as narrow as a map. When I don’t know, the world feels unlimited.

qualitative change is only produced by long-term quantitative accumulation.

I like twilight better.” “Why?” “When twilight fades, you can see the stars. When dawn fades, all that’s left is...” “All that’s left is the harsh light of reality.

English, formerly the most widely used language, and Chinese, spoken by the largest population, had blended with each other without distinction to become the world’s most powerful language. Luo Ji learned later that the other languages of the world were undergoing the same fusion.

The past was like a handful of sand you thought you were squeezing tightly, but which had already run out through the cracks between your fingers.

But in this dark forest, there's a stupid child named humanity, who has built a bonfire and is standing beside it shouting, 'Here I am! Here I am!

The brevity of a human lifespan tormented them as never before, and their hearts soared above the vault of time to join with their descendants and plunge into blood and fire in the icy cold of space, the eventual meeting place for the souls of all soldiers. *

The universe had once been bright, too. For a short time after the big bang, all matter existed in the form of light, and only after the universe turned to burnt ash did heavier elements precipitate out of the darkness and form planets and life. Darkness was the mother of life and of civilization. On Earth, an avalanche of curses and abuse rolled out into space toward Blue Space and Bronze Age, but the two ships made no reply. They cut off all contact with the Solar System, for to those two worlds, the Earth was already dead. The two dark ships became one with the darkness, separated by the Solar System and drifting further apart. Carrying with them the entirety of human thoughts and memories, and embracing all of the Earth’s glory and dreams, they quietly disappeared into the eternal night.

Those two axioms are solid enough from a sociological perspective … but you rattled them off so quickly, like you’d already worked them out,” Luo Ji said, a little surprised. “I’ve been thinking about this for most of my life, but I’ve never spoken about it with anyone before. I don’t know why, really.… One more thing: To derive a basic picture of cosmic sociology from these two axioms, you need two other important concepts: chains of suspicion, and the technological explosion.” “Interesting terms. Can you explain them?” Ye Wenjie glanced at her watch. “There’s no time. But you’re clever enough to figure them out. Use those two axioms as a starting point for your discipline, and you might end up becoming the Euclid of cosmic sociology.” “I’m no Euclid. But I’ll remember what you said and give it a whirl. I might come to you for guidance, though.” “I’m afraid there won’t be that opportunity.… In that case, you might as well just forget I said anything. Either way, I’ve fulfilled my duty. Well, Xiao Luo, I’ve got to go.” “Take care, Professor.” Ye Wenjie went off through the twilight to her final meet-up. The

In one remote corner of the vast sea of information on the Internet, there was a remote corner, and in a remote corner of that remote corner, and then in a remote corner of a remote corner of a remote corner of that remote corner—that is, in the very depths of the most remote corner of all—a virtual world came back to life.

Are you under the impression that the object of everyone else’s love actually exists?” “Is that even a question?” “Sure. For the majority of people, what they love exists only in the imagination. The object of their love is not the man or woman of reality, but what he or she is like in their imagination. The person in reality is just a template used for the creation of this dream lover. Eventually, they find out the differences between their dream lover and the template. If they can get used to those differences, then they can be together. If not, they split up. It’s as simple as that. You differ from the majority in one respect: You didn’t need a template.

Dark. It’s so fucking dark,” the captain murmured, and then shot himself.

Make time for life, or life won’t make time.

There’s nothing excessive about imagination. Especially where love is concerned.

Beauty is always paired with good,

Successful cooperation does not equate to successful understanding.

The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. Even breathing is done with care. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. If he finds other life—another hunter, an angel or a demon, a delicate infant or a tottering old man, a fairy or a demigod—there’s only one thing he can do: open fire and eliminate them. In this forest, hell is other people.

Why not the eyes of dawn?” “I like twilight better.” “Why?” “When twilight fades, you can see the stars. When dawn fades, all that’s left is…” “All that’s left is the harsh light of reality.

The past was like a handful of sand you thought you were squeezing tightly, but which had already run out through the cracks between your fingers. Memory was a river that had run dry long ago, leaving only scattered gravel in a lifeless riverbed. He had lived life always looking out for the next thing, and whenever he had gained, he had also lost, leaving him with little in the end.

Human expressions, and people’s eyes in particular, are subtle and complex. A gaze or a smile can transmit so much information! And only humans can understand that information. Only humans have that sensitivity.

Lao Yang told him that sixty, like sixteen, was the best time in life, an age where the burdens of one’s forties and fifties had been laid down, but the slowdown and illness of the seventies and eighties had not yet arrived.

The assembly fell into a prolonged silence. Ahead of them stretched the leaden road of time, terminating somewhere in the mists of the future, where all they could see were flickering flames and luster of blood. The brevity of a human lifespan tormented them as never before, and their hearts soared above the vault of time to join with their descendants and plunge into blood and fire in the icy cold of space, the eventual meeting place for the souls of all soldiers.

He recalled a movie he had seen in his youth, in which the characters lived in a Rubik’s Cube world made up of countless identical cubic rooms, each of which contained a different sort of death mechanism. They passed from one room to the next, endlessly.…

One thing in particular that struck him was the total absence of landscapes, the mark of a mature aesthetic sensibility: hanging landscape paintings in a house situated in the Garden of Eden would be as pointless as pouring a bucket of water into the ocean.

As the elderly passed away, the departed Golden Shore vanished into the smoke of history. The ship of human civilization floated alone in the vast ocean, surrounded on all sides by endless, sinister waves, and no one knew if there even was an opposite shore.

Beauty is always paired with good, so if there really existed a demarcation between good and evil in the universe, this object would fall on the good side.

A lovely dream had ended: Dark forest theory had received its final confirmation with the annihilation of Trisolaris.

Survival is the primary need of civilization. Civilization continuously grows and expands, but the total matter in the universe remains constant.

Now he saw only the stars and the headstones, the two greatest symbols of eternity.

Darkness was the mother of life and of civilization

Exponentials are the devils of mathematics.

The fundamental axiom of economics is the human mercenary instinct. Without

I’ve got to learn how to live. If I can’t swing that, it’ll be a damn shame,” Luo

Emancipation of human nature inevitably brings with it scientific and technological progress.

So literature, it turns out, is a perverted endeavor.” “It was like that for Shakespeare and Balzac and Tolstoy, at least.

It doesn’t matter. It’s all the same.

Mom, I'm going to be a firefly.

No, no. Don't say where we are! Once we know where we are, then the world becomes as narrow as a map. When we don't know, the world feels unlimited.

The birth of a new civilization is the formation of a new morality.

even in the face of the devastating Trisolar Crisis, the unity of the human race is still a distant dream. The

He was won over by their expressions, because he knew that the eyes of ordinary people were the best reflection of the level of civilization in a time and place.

Don't dismiss Simplicity, simple is solid.

If I’ve set your imagination going, I apologize." “What do you think I should think about now?” “In my experience, any thinking is liable to go off the rails. You should just go to sleep.

Ten thousand times the web could be destroyed, and ten thousand times the spider would rebuild it. There was neither annoyance nor despair, nor any delight, just as it had been for a billion years. Luo

During research conducted with the neuroscientist Keiko Yamasuki, he discovered that brain activity for thoughts and memories operated on the quantum level rather than on the molecular level as previously believed.

Time is the one thing that can’t be stopped. Like a sharp blade, it silently cuts through hard and soft, constantly advancing. Nothing is capable of jolting it even the slightest bit, but it changes everything. The

The nurse picked up one of the umbrellas, which must have been fairly heavy, because she had to carry it over her shoulder. “Is it raining out?” She shook her head. “You think I’m carrying an … umbrella?” she said, unfamiliar with the last word. “If it’s not an umbrella, then what is it?” Luo Ji pointed to the device on her shoulder, imagining that she would say some peculiar name for it. But she didn’t. “It’s my bicycle,” she said.

I only wish to discuss with you one possibility: Perhaps seeds of love are present in other places in the universe. We ought to encourage them to sprout and grow. "That's a goal worth taking risks for." Yes, we can take risks. "I have a dream that one day brilliant sunlight will illuminate the dark forest." The sun was setting. Now only its tip was exposed beyond the distant mountains, as if the mountaintop was inset with a dazzling gemstone. Like the grass, the child running in the distance was bathed in the golden sunset. The sun will set soon. Isn't your child afraid? "Of course she's not afraid. She knows that the sun will rise again tomorrow.

The aborted research project wasn’t important in and of itself. What mattered was the instruction that Ye Wenjie had given him, so that’s where Luo Ji’s mind was stuck. Over and over again he recalled her words: Suppose a vast number of civilizations are distributed throughout the universe, on the order of the number of detectable stars. Lots and lots of them. The mathematical structure of cosmic sociology is far clearer than that of human sociology. The factors of chaos and randomness in the complex makeups of every civilized society in the universe get filtered out by the immense distance, so those civilizations can act as reference points that are relatively easy to manipulate mathematically. First: Survival is the primary need of civilization. Second: Civilization continuously grows and expands, but the total matter in the universe remains constant. One more thing: To derive a basic picture of cosmic sociology from these two axioms, you need two other important concepts: chains of suspicion and the technological explosion. I’m afraid there won’t be that opportunity.… Well, you might as well just forget I said anything. Either way, I’ve fulfilled my duty. He

To your mind, a nuclear bomb is detonated and then explodes, but the actual process is more like burning. The greater the yield, the longer the combustion. A twenty-megaton nuclear explosion, for example, has a fireball that can last for over twenty seconds.

The fundamental axiom of economics is the human mercenary instinct. Without that assumption, the entire field would collapse. There isn’t any fundamental axiom for sociology yet, but it might be even darker than economics. The truth always picks up dust. A small number of people could fly off into space, but if we knew it would come to that, why would we have bothered in the first place?” “Bothered with what?” “Why would we have had the Renaissance? Why the Magna Carta? Why the French Revolution? If humanity had stayed divided into classes, kept in place by the law’s iron rule, then when the time came, the ones who needed to leave would leave, and the ones who had to stay behind would stay. If this took place in the Ming or Qing Dynasties, then I’d leave, of course, and you’d stay behind. But that’s not possible now.

Suppose a vast number of civilizations are distributed throughout the universe, on the order of the number of detectable stars. Lots and lots of them. The mathematical structure of cosmic sociology is far clearer than that of human sociology. The factors of chaos and randomness in the complex makeups of every civilized society in the universe get filtered out by the immense distance, so those civilizations can act as reference points that are relatively easy to manipulate mathematically. First: Survival is the primary need of civilization. Second: Civilization continuously grows and expands, but the total matter in the universe remains constant. One more thing: To derive a basic picture of cosmic sociology from these two axioms, you need two other important concepts: chains of suspicion and the technological explosion.

Actually, doomsday is a wonderful time. The most wonderful time, even. This is the only time in history where there’s a chance for people to abandon all of their cares and burdens and belong entirely to themselves. It’s stupid to be like him. The most responsible way of life right now is to enjoy ourselves while we can.

I read it when I was a kid. Shanghai’s about to fall into the ocean, and a group of people go house to house seizing life preservers and then destroying them en masse, for the sole purpose of making sure that no one would live if everyone couldn’t. I remember in particular there was one little girl who took the group to the door of one house and cried out, ‘They still have one!

The classic images Shakespeare, Balzac, and Tolstoy created were born from their mental wombs. But today's practitioners of literacture have lost that creativity. Their minds give birth only to shattered fragments and freaks, whose brief lives are nothing but cryptic spasms devoid of reason. Then they sweep up these fragments into a bag they peddle under the label 'postmodern' or 'deconstructionist' or 'symbolism' or 'irrational.

He even saw clearly the world she inhabited, a still snowscape where the sky was forever graced with silver stars and a crescent moon, the snow falling steadily. In the silence you could practically hear the snowflakes coming to rest on the ground like smooth white sugar. In her exquisite cabin in the snow, the Eve that Luo Ji had formed out of one of his mind’s ribs sat before an ancient fireplace quietly watching the dancing flames.

You haven’t gotten to the point of leaving a glass for her, too.” He covered his eyes but said nothing. She pulled away his hands, and then, looking straight at him, asked, “She’s alive, isn’t she?” He nodded and sat up. “Rong, I used to think that a character in a novel was controlled by her creator, that she would be whatever the author wanted her to be, and do whatever the author wanted her to do, like God does for us.” “Wrong!” she said, standing up and beginning to pace the room. “Now you realize you were wrong. This is the difference between an ordinary scribe and a literary writer. The highest level of literary creation is when the characters in a novel possess life in the mind of the writer. The writer is unable to control them, and might not even be able to predict the next action they will take. We can only follow them in wonder to observe and record the minute details of their lives like a voyeur. That’s how a classic is made.” “So literature, it turns out, is a perverted endeavor.” “It was like that for Shakespeare and Balzac and Tolstoy, at least. The classic images they created were born from their mental wombs. But today’s practitioners of literature have lost that creativity. Their minds give birth only to shattered fragments and freaks, whose brief lives are nothing but cryptic spasms devoid of reason. Then they sweep up these fragments into a bag they peddle under the label ‘postmodern’ or ‘deconstructionist’ or ‘symbolism’ or ‘irrational.’” “So you mean that I’ve become a writer of classic literature?” “Hardly. Your mind is only gestating an image, and it’s the easiest one of all. The minds of those classic authors gave birth to hundreds and thousands of figures. They formed the picture of an era, and that’s something that only a superhuman can accomplish. But what you’ve done isn’t easy. I didn’t think you’d be able to do it.” “Have you ever done it?” “Just once,” she said simply, and dropped the subject. She grabbed his neck, and said, “Forget it. I don’t want that birthday present anymore. Come back to a normal life, okay?” “And if all this continues—what then?” She studied him for a few seconds, then let go of him and shook her head with a smile. “I knew it was too late.” Picking up her bag from the bed, she left. Then

As he spoke, he looked up and once again saw Zhang Beihai’s steady gaze, which revealed a determination that warmed his heart a little. Zhang Beihai, I know you have faith. With a father like that, it would be impossible for you not to. But things are definitely not as simple as you say. I don’t know what you base your faith on, and I don’t even know what else your faith encompasses. Just like your father. I admired him, but I have to admit that in the end I couldn’t figure him out. Chang

weirdly, thought of a problem put forth by his high school physics teacher: How can you make a marble bed as soft as a Simmons mattress? The answer: Dig out a depression in that marble the exact size and shape of a human body. Then when you lie in that depression, the pressure will be evenly distributed and it would feel incredibly soft. He closed his eyes and imagined that the warmth of his body was melting the iron ore beneath him and forming that kind of depression.… Gradually, this calmed him.

but in our world, even if you express your true thoughts, you must do so in an appropriately euphemistic way. For example, although what you just said is in accord with the ideals of ETO, its overly direct formulation might repel some of our members and cause unanticipated consequences. Of course, it may be that you’ll never be able to learn to express yourself appropriately.” It is precisely the expression of deformed thoughts that makes the exchange of information in human society, particularly in human literature, so much like a twisted maze.

I only wish to discuss with you one possibility: Perhaps seeds of love are present in other places in the universe. We ought to encourage them to sprout and grow. “That’s a goal worth taking risks for.” Yes, we can take risks. “I have a dream that one day brilliant sunlight will illuminate the dark forest.” The sun was setting. Now only its tip was exposed beyond the distant mountains, as if the mountaintop was inset with a dazzling gemstone. Like the grass, the child running in the distance was bathed in the golden sunset. The sun will set soon. Isn’t your child afraid? “Of course she’s not afraid. She knows that the sun will rise again tomorrow.

Rather than returning to school, he drove straight to the psychologist. “You may need a bit of adjustment, but it’s nothing serious,” the doctor said, after listening to his lengthy narrative. “Nothing serious?” Luo Ji opened his bloodshot eyes wide. “I’m madly in love with a fictional person from a novel of my own creation. I’ve been with her, I’ve traveled with her, and I’ve even broken up with my real-life girlfriend over her. Is that nothing serious to you?” The doctor smiled tolerantly. “Don’t you get it? I’ve given my most profound love to an illusion!” “Are you under the impression that the object of everyone else’s love actually exists?” “Is that even a question?” “Sure. For the majority of people, what they love exists only in the imagination. The object of their love is not the man or woman of reality, but what he or she is like in their imagination. The person in reality is just a template used for the creation of this dream lover. Eventually, they find out the differences between their dream lover and the template. If they can get used to those differences, then they can be together. If not, they split up. It’s as simple as that. You differ from the majority in one respect: You didn’t need a template.” “So this isn’t a sickness?” “Only in the way your girlfriend pointed out: You’ve got natural literary talent. If you want to call that a sickness, go right ahead.” “But isn’t imagining to this degree a little excessive?” “There’s nothing excessive about imagination. Especially where love is concerned.” “So what should I do? How can I forget about her?” “It’s impossible. You can’t forget her, so don’t make the effort. That will only lead to side effects, and maybe even mental disorders. Let nature take its course. Once more, for emphasis: Don’t try to forget about her. It won’t work. But as time passes, her influence on your life will decrease. And you’re actually quite lucky. Whether or not she really exists, you’re fortunate to be in love.” This

Darkness. Before the darkness there was nothing but nothingness, and the nothingness was without color. Nothing was in the nothingness. Darkness at least meant that there was space. Soon, disturbances appeared in the darkness of space, penetrating everything like a gentle breeze. It was the sensation of time passing, for the nothingness was without time, but now time took shape in a glacial thaw. Only much later was there light, at first as a shapeless blob of brightness, and then, after another long wait, the shape of the world gradually emerged. The newly resurrected consciousness struggled to make sense of it, at first managing to work out a few thin, transparent tubes, then a human face behind them, which quickly disappeared, exposing the creamy-white light of the ceiling.

Successful cooperation does not equate to successful understanding. There was no question that Zhang Beihai was the most capable political commissar on the ship, and he was forthright in his work, exploring every last issue with complete precision. But his internal world was a bottomless gray to Wu Yue, who always felt like Zhang Beihai was saying: Just do it this way. This way’s best, or most correct. But it’s not what I really want. It began as an indistinct feeling that grew increasingly obvious. Of course, whatever Zhang Beihai did was always the best or most correct, but Wu Yue had no idea what he actually wanted. Wu Yue adhered to one article of faith: Command of a warship was a dangerous position, so the two commanders must understand each other’s minds. This presented Wu Yue with a knotty problem. At first, he thought that Zhang Beihai was somehow on guard, which offended Wu. In the tough post of captain of a destroyer, was anyone more forthright and guileless than he was? What do I have worth guarding against?

The cosmic sculptor had felt compelled to dot pupils onto the universe, yet had a tremendous terror of granting it sight. This balance of fear and desire resulted in the tininess of the stars against the hugeness of space, a declaration of caution above all. “See how the stars are points? The factors of chaos and randomness in the complex makeups of every civilized society in the universe get filtered out by the distance, so those civilizations can act as reference points that are relatively easy to manipulate mathematically.” “But there’s nothing concrete to study in your cosmic sociology, Dr. Ye. Surveys and experiments aren’t really possible.” “That means your ultimate result will be purely theoretical. Like Euclidean geometry, you’ll set up a few simple axioms at first, then derive an overall theoretic system using those axioms as a foundation.” “It’s all fascinating, but what would the axioms of cosmic sociology be?” “First: Survival is the primary need of civilization. Second: Civilization continuously grows and expands, but the total matter in the universe remains constant.” The

After a long while, when Luo Ji recovered a little of the consciousness that had totally disappeared, he had sensations of cold, a cold that seemed to emanate from within his body and diffuse outward like light to freeze the entire world. He saw a snow-white patch in which there first was nothing but infinite white. Then a small black dot appeared in its very center, and he could gradually make out a familiar figure, Zhuang Yan, holding their child. He walked with difficulty through a snowy wilderness so empty that it lost all dimension. She was wrapped in a red scarf, the same one she had worn seven years ago on the snowy night he first saw her. The child, red-faced from the cold, waved two small hands at him from her mother’s embrace, and shouted something that he couldn’t hear. He wanted to chase them through the snow, but the young mother and child vanished, as if dissolved into snow. Then he himself vanished, and the snowy white world shrank into a thin silver thread, which in the unbounded darkness was all that remained of his consciousness. It was the thread of time, a thin, motionless strand that extended infinitely in both directions. His soul, strung on this thread, was gently sliding off at a constant speed into the unknowable future.

You don’t need to pity them. Really, let me tell you: don’t. The reality of the universe is not something to envy.” “Why?” Yifan lifted a hand and pointed at the stars of the galaxy. Then he let the 3G force pull his arm back to this chest. “Darkness. Only darkness.” “You mean the dark forest state?” Guan Yifan shook his head, a gesture that appeared to be a struggle in hypergravity. “For us, the dark forest state is all-important, but it’s just a detail of the cosmos. If you think of the cosmos as a great battlefield, dark forest strikes are nothing more than snipers shooting at the careless—messengers, mess men, etc. In the grand scheme of the battle, they are nothing. You have not seen what a true interstellar war is like.” “Have you?” “We’ve caught a few glimpses. But most things we know are just guesses.… Do you really want to know? The more you possess of this kind of knowledge, the less light remains in your heart.” “My heart is already completely dark. I want to know.” And so, more than six centuries after Luo Ji had fallen through ice into that lake, another dark veil hiding the truth about the universe was lifted before the gaze of one of the only survivors of Earth civilization. Yifan asked, “Why don’t you tell me what the most powerful weapon for a civilization possessing almost infinite technological prowess is? Don’t think of this as a technical question. Think philosophy.” Cheng Xin pondered for a while and then struggled to shake her head. “I don’t know.” “Your experiences should give you a hint.” What had she experienced? She had seen how a cruel attacker could lower the dimensions of space by one and destroy a solar system. What are dimensions? “The universal laws of physics,” Cheng Xin said. “That’s right. The universal laws of physics are the most terrifying weapons, and also the most effective defenses. Whether it’s by the Milky Way or the Andromeda Galaxy, at the scale of the local galactic group or the Virgo Supercluster, those warring civilizations possessing godlike technology will not hesitate to use the universal laws of physics as weapons. There are many laws that can be manipulated into weapons, but most commonly, the focus is on spatial dimensions and the speed of light. Typically, lowering spatial dimensions is a technique for attack, and lowering the speed of light is a technique for defense. Thus, the dimensional strike on the Solar System was an advanced attack method. A dimensional strike is a sign of respect. In this universe, respect is not easy to earn. I guess you could consider it an honor for Earth civilization.

So long as you input the appropriate parameters, the star could be a model for our sun. Think about it. It’s always useful to have the sun in your computer memory. It’s the biggest presence that’s close to us in the cosmos, but we could take more advantage of it. The model may have many more discoveries lying in wait.” Rey Diaz said, “One previous use of the sun is what brought humanity to the brink, and brought you and me to this place.” “But new discoveries might bring humanity back. So today, I’ve invited you here to watch the sunrise.” The rising sun was now just peeking its head over the horizon. The desert in front of them came into focus like a developing photograph, and Rey Diaz could see that this place, once blasted by the fires of hell, was now covered in sparse undergrowth. “I am become death, the destroyer of worlds,” Allen exclaimed. “What?” Rey Diaz whipped his head around, as if someone had shot him from behind. “Oppenheimer said that when he watched the first nuclear explosion. I think it’s a quote from the Bhagavad Gita.” The wheel in the east expanded rapidly, casting light across the Earth like a golden web. The same sun was there on that morning when Ye Wenjie had tuned the Red Shore antenna, and even before that, the same sun had shone upon the dust settling after the first bomb blast. Australopithecus a million years ago and the dinosaurs a hundred million years ago had turned their dull eyes upon this very sun, and even earlier than that, the hazy light that penetrated the surface of the primeval ocean and was felt by the first living cell was emitted by this same sun. Allen went on, “And then a man called Bainbridge followed up Oppenheimer’s statement with something completely nonpoetic: ‘Now we are all sons of bitches.’” “What are you talking about?” Rey Diaz said. Watching the rising sun, his breathing became ragged. “I’m thanking you, Mr. Rey Diaz, because from now on we’re not sons of bitches.

First let me thank all of you for your honesty,” Chang Weisi said, and then turned to Zhang Beihai. “Excellent, Comrade Zhang. Tell us, on what do you base your confidence?” Zhang Beihai stood up, but Chang Weisi motioned for him to sit down. “This is not a formal meeting,” he said. “It’s just a heart-to-heart chat.” Still standing at attention, Zhang Beihai said, “Commander, I can’t answer your question sufficiently in just a few words, because building faith is a long and complicated process. First of all, I’d like to make note of the mistaken thinking among the troops at the present time. We all know that prior to the Trisolar Crisis, we had been advocating for the examination of the future of war from scientific and rational perspectives, and a powerful inertia has sustained this mentality to the present day. This is particularly the case in the present space force, where it has been exacerbated by the influx of a large number of academics and scientists. If we use this mentality to contemplate an interstellar war four centuries in the future, we’ll never be able to establish faith in a victory.” “What Comrade Zhang Beihai says is peculiar,” a colonel said. “Is steadfast faith not built upon science and reason? No faith is solid that is not founded on objective fact.” “Then let’s take another look at science and reason. Our own science and reason, remember. The Trisolarans’ advanced development tells us that our science is no more than a child collecting shells on the beach who hasn’t even seen the ocean of truth. The facts we see under the guidance of our science and reason may not be the true, objective facts. And since that’s the case, we need to learn how to selectively ignore them. We should see how things change as they develop, and we shouldn’t write off the future through technological determinism and mechanical materialism.” “Excellent,” Chang Weisi said, and nodded at him to continue. “We must establish faith in victory, a faith that is the foundation of military duty and dignity! When the Chinese military once faced a powerful enemy under extremely poor conditions, it established a firm faith in victory through a sense of responsibility to the people and the motherland. I believe that today, a sense of responsibility to the human race and to Earth civilization can encourage the same faith.

What you’re saying makes no sense. At least, it doesn’t make sense to lower spatial dimensions as a weapon. In the long run, that’s the sort of attack that would kill the attacker as well as the target. Eventually, the side that initiated attack would also see their own space fall into the two-dimensional abyss they created.” Nothing but silence. After a long while, Cheng Xin called out, “Dr. Guan?” “You’re too … kind-hearted,” Guan Yifan said softly. “I don’t understand—” “There’s a way for the attacker to avoid death. Think about it.” Cheng Xin pondered and then said, “I can’t figure it out.” “I know you can’t. Because you’re too kind. It’s very simple. The attacker must first transform themselves into life forms that can survive in a low-dimensional universe. For instance, a four-dimensional species can transform itself into three-dimensional creatures, or a three-dimensional species can transform itself into two-dimensional life. After the entire civilization has entered a lower dimension, they can initiate a dimensional strike against the enemy without concern for the consequences.” Cheng Xin was silent again. “Are you reminded of anything?” Yifan asked. Cheng Xin was thinking of more than four hundred years ago, when Blue Space and Gravity had stumbled into the four-dimensional fragment. Yifan had been a member of the small expedition that conversed with the Ring. Did you build this four-dimensional fragment? You told me that you came from the sea. Did you build the sea? Are you saying that for you, or at least for your creators, this four-dimensional space is like the sea for us? More like a puddle. The sea has gone dry. Why are so many ships, or tombs, gathered in such a small space? When the sea is drying, the fish have to gather into a puddle. The puddle is also drying, and all the fish are going to disappear. Are all the fish here? The fish responsible for drying the sea are not here. We’re sorry. What you said is really hard to understand. The fish that dried out the sea went onto land before they did this. They moved from one dark forest to another dark forest. “Is it worth it to pay such a price for victory in war?” Cheng Xin asked. She could not imagine how it was possible to live in a world of one fewer dimension. In two-dimensional space, the visible world consisted of a few line segments of different lengths. Could anyone who was born in three-dimensional space willingly live in a thin sheet of paper with no thickness? Living in three dimensions must be equally confining and unimaginable for those born to a four-dimensional world. “It’s better than death,” said Yifan. While