Cixin Liu Quotes

No, emptiness is not nothingness. Emptiness is a type of existence. You must use this existential emptiness to fill yourself.

Weakness and ignorance are not barriers to survival, but arrogance is.

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

To effectively contain a civilization’s development and disarm it across such a long span of time, there is only one way: kill its science.

Your lack of fear is based on your ignorance.

It was impossible to expect a moral awakening from humankind itself, just like it was impossible to expect humans to lift off the earth by pulling up on their own hair. To achieve moral awakening required a force outside the human race.

Every era puts invisible shackles on those who have lived through it, and I can only dance in my chains.

I’m a simple man without a lot of complicated twists and turns. Look down my throat and you can see out my ass.

Time is the cruelest force of all.

In the face of madness, rationality was powerless.

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.

Is it possible that the relationship between humanity and evil is similar to the relationship between the ocean and an iceberg floating on its surface? Both the ocean and the iceberg are made of the same material. That the iceberg seems separate is only because it is in a different form. In reality, it is but a part of the vast ocean.…

If we lose our human nature, we lose much, but if we lose our bestial nature, we lose everything.

In China, any idea that dared to take flight would only crash back to the ground. The gravity of reality is too strong.

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.

By the time you’re my age, you’ll realize that everything you once thought mattered so much turns out to mean very little.

You must know that a person’s ability to discern the truth is directly proportional to his knowledge.

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

And now we know that this is the journey that must be made by every civilization: awakening inside a cramped cradle, toddling out of it, taking flight, flying faster and farther, and, finally, merging with the fate of the universe as one. The ultimate fate of all intelligent beings has always been to become as grand as their thoughts.

Even if God were here, it wouldn’t do any good. The entire human race has reached the point where no one is listening to their prayers.

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.

A woman should be like water, able to flow over and around anything.

Death is the only lighthouse that is always lit. No matter where you sail, ultimately, you must turn toward it. Everything fades in the world, but Death endures.

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

Should philosophy guide experiments, or should experiments guide philosophy?

The ultimate fate of all intelligent beings has always been to become as grand as their thoughts.

I need a dual-vector foil for cleansing.

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.

Mere existence is already the result of incredible luck. Such was the case on Earth in the past, and such has always been the case in this cruel universe. But at some point, humanity began to develop the illusion that they’re entitled to life, that life can be taken for granted.

Sometimes I thought life was precious, and everything was so important; but other times I thought humans were insignificant, and nothing was worthwhile. Anyway, my life passed day after day accompanied by this strange feeling, and before I knew it, I was old.…

In the eternal night of the Orion Arm of the Milky Way Galaxy, two civilization had swept through like two shooting stars, and the universe had remembered their light.

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.

The universe is grand, but life is grander. We’re certain to meet again.

Life shouldn’t be a lifetime of waiting.

In the shooter hypothesis, a good marksman shoots at a target, creating a hole every ten centimeters. Now suppose the surface of the target is inhabited by intelligent, two-dimensional creatures. Their scientists, after observing the universe, discover a great law: “There exists a hole in the universe every ten centimeters.” They have mistaken the result of the marksman’s momentary whim for an unalterable law of the universe. The farmer hypothesis, on the other hand, has the flavor of a horror story: Every morning on a turkey farm, the farmer comes to feed the turkeys. A scientist turkey, having observed this pattern to hold without change for almost a year, makes the following discovery: “Every morning at eleven, food arrives.” On the morning of Thanksgiving, the scientist announces this law to the other turkeys. But that morning at eleven, food doesn’t arrive; instead, the farmer comes and kills the entire flock.

The fish responsible for drying the sea are not here.

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.

The creation myths of the various peoples and religions of the world pale when compared to the glory of the big bang.

She was like a star, always so distant. Even the light she shone on me was always cold.

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.

He lacked the ability to thrive in society, but also the resources to ignore it. All he could do was hang on to the edge, suffering.

We'll send only a brain," he said.

Fate lies within the light cone.

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.

Hide yourself well; cleanse well.

Take those frauds who practice pseudoscience - do you know who they're most afraid of?" "Scientists, of course." "No. Many of the best scientists can be fooled by pseudoscience and sometimes devote their lives to it. But pseudoscience is afraid of one particular type of people who are very hard to fool: stage magicians. In fact, many pseudoscience hoaxes were exposed by stage magicians.

The child that was human civilization had opened the door to her home and glanced outside. The endless night terrified her so much that she shuddered against the expansive and profound darkness, and shut the door firmly.

On the day of the universe's Last Judgment, two humans and a robot belonging to the Earth and Trisolaran civilizations embraced each other in ecstasy.

Anything sufficiently weird must be fishy.

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.

Because the universe is not a fairy tale.

Why are you all like this?” Evans suddenly became furious. “Why does one have to save people to be considered a hero? Why is saving other species considered insignificant? Who gave humans such high honors? No, humans do not need saving. They’re already living much better than they deserve.

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

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

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!

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

Everyone likes to reminisce, but no one wants to listen, and everyone feels annoyed when someone else tells a story.

I don’t have much to say except a warning. Life reached an evolutionary milestone when it climbed onto land from the ocean, but those first fish that climbed onto land ceased to be fish. Similarly, when humans truly enter space and are freed from the Earth, they cease to be human. So, to all of you I say this: When you think about heading into outer space without looking back, please reconsider. The cost you must pay is far greater than you could imagine. *

Evans: We don't know what extraterrestrial civilization is like, but we know humanity.

Can the fundamental nature of matter really be lawlessness? Can the stability and order of the world be but a temporary dynamic equilibrium achieved in a corner of the universe, a short-lived eddy in a chaotic current?

Young people are all the same. The more books you read, the more confused you become.

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.

Everyone is afraid of something. The enemy must be, too. The more powerful they are, the more they have to lose to their fears.

At the end, an adult and a child stand in front of the grave of a Red Guard who had died during the faction civil wars. The child asks the adult, ‘Are they heroes?’ The adult says no. The child asks, ‘Are they enemies?’ The adult again says no. The child asks, ‘Then who are they?’ The adult says, ‘History.

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.

Even Coca-Cola probably tasted medicinal the first time you tried it. Anything addictive is like that.

The universal laws of physics are the most terrifying weapons, and also the most effective defenses.

Mom, I'm going to be a firefly.

Every day on this planet some species that doesn't draw the attention of humans goes extinct.

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

Pan-Species Communism. It’s an ideology I invented. Or maybe you can call it a faith. Its core belief is that all species on Earth are created equal.

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

That’s right. Five minutes into the all-hands meeting, the fundamental values of this totalitarian society had received the support of the vast majority of the crew. So, let me tell you, when humans are lost in space, it takes only five minutes to reach totalitarianism.

Everything you see before you is the result of poverty. But how are things any better in the wealthy countries? They protect their own environments, but then shift the heavily polluting industries to the poorer nations.

On Earth, humankind can step onto another continent, and without a thought, destroy the kindred civilizations found there through warfare and disease. But when they gaze up at the stars, they turn sentimental and believe that if extraterrestrial intelligences exist, they must be civilizations bound by universal, noble, moral constraints, as if cherishing and loving different forms of life are parts of a self-evident universal code of conduct. I think it should be precisely the opposite: Let’s turn the kindness we show toward the stars to members of the human race on Earth

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.

From time to time, I would gaze up at the stars after a night shift and think that they looked like a glowing desert, and I myself was a poor child abandoned in the desert... I thought that life was truly an accident among accidents in the universe. The universe was an empty palace, and humankind the only ant in the entire palace. This kind of thinking infused the second half of my life with a conflicted mentality: Sometimes I thought life was precious, and everything was so important; but other times I thought humans were insignificant, and nothing was worthwhile. Anyway, my life passed day after day accompanied by this strange feeling, and before I knew it, I was old...

Should could no longer feel grief. She was now like a Geiger counter that had been subjected to too much radiation, no longer capable of giving any reaction, noiselessly displaying a reading of zero.

Luckily, the forest was so dense that the two escaped without injury, though one of the men peed in his pants.

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.

Fundamentally, Tianming was not suited to live in society, nor out of it. He lacked the ability to thrive in society, but also the resources to ignore it. All he could do was hang on to the edge, suffering. He had no idea where he was headed in life.

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.

Cheng Xin now recalled the strange feeling she had experienced each time she had looked at Van Gogh’s painting. Everything else in the painting—the trees that seemed to be on fire, and the village and mountains at night—showed perspective and depth, but the starry sky above had no three-dimensionality at all, like a painting hanging in space. Because the starry night was two-dimensional. How could Van Gogh have painted such a thing in 1889? Did he, having suffered a second breakdown, truly leap across five centuries

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,

Is it possible that the relationship between humanity and evil is similar to the relationship between the ocean and an iceberg floating on its surface? Both the ocean and the iceberg are made of the same material. That the iceberg seems separate is only because it is in a different form. In reality, it is but a part of the vast ocean.… It was impossible to expect a moral awakening from humankind itself, just like it was impossible to expect humans to lift off the earth by pulling up on their own hair. To achieve moral awakening required a force outside the human race.

This was the theory of “contact as symbol” proposed by sociologist Bill Mathers of RAND Corporation in his book, The 100,000-Light-Year Iron Curtain: SETI Sociology. Mathers believed that contact with an alien civilization is only a symbol or a switch. Regardless of the content of the encounter, the results would be the same.

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.

Everything was deathly quiet. The eyes were the most terrifying: the eyes of dinosaurus; the eyes of trilobites and ants; the eyes of birds and butterflies; the eyes of bacteria... The humans alone possessed one hundred billion pairs of eyes, equal to the number of stars in the Milky Way, Among them were the eyes of ordinary men and women, and the eyes of Da Vinci, Shakespeare, and Einstein.

The creation myths of the various peoples and religions of the world pale when compared to the glory of the big bang. The three-billion-year history of life’s evolution from self-reproducing molecules to civilization contains twists and romances that cannot be matched by any myth or epic. There is also the poetic vision of space and time in relativity, the weird subatomic world of quantum mechanics … these wondrous stories of science all possess an irresistible attraction. Through the medium of science fiction, I seek only to create my own worlds using the power of imagination, and to make known the poetry of Nature in those worlds, to tell the romantic legends that have unfolded between Man and Universe.

Because of the speed of light. The known universe is about sixteen billion light-years across, and it’s still expanding. But the speed of light is only three hundred thousand kilometers per second, a snail’s pace. This means that light can never go from one end of the universe to the other. Since nothing can move faster than the speed of light, it follows that no information and motive force can go from one end of the universe to the other. If the universe were a person, his neural signals couldn’t cover his entire body; his brain would not know of the existence of his limbs, and his limbs would not know of the existence of the brain. Isn’t that paraplegia? The image in my mind is even worse: The universe is but a corpse puffing up.” “Interesting, Dr. Guan, very interesting!” “Other than the speed of light, three hundred thousand kilometers per second, there’s another three-based symptom.” “What do you mean?” “The three dimensions. In string theory, excepting time, the universe has ten dimensions. But only three are accessible at the macroscopic scale, and those three form our world. All the others are folded up in the quantum realm.

My father then said, ‘Mike, I’ve told you how dinosaurs went extinct. An asteroid crashed into the Earth. The world first became a sea of fire, and then sank into a prolonged period of darkness and coldness.… One night, you woke from a nightmare, saying that you had dreamt that you were back in that terrifying age. Let me tell you now what I wanted to tell you that night: If you really lived during the Cretaceous Period, you’d be fortunate. The period we live in now is far more frightening. Right now, species on Earth are going extinct far faster than during the late Cretaceous. Now is truly the age of mass extinctions! So, my child, what you’re seeing is nothing. This is only an insignificant episode in a much vaster process. We can have no sea birds, but we can’t be without oil. Can you imagine life without oil? Your last birthday, I gave you that lovely Ferrari and promised you that you could drive it after you turned fifteen. But without oil, it would be a pile of junk metal and you’d never drive it. Right now, if you want to visit your grandfather, you can get there on my personal jet and cross the ocean in a dozen hours or so. But without oil, you’d have to tumble in a sailboat for more than a month.… These are the rules of the game of civilization: The first priority is to guarantee the existence of the human race and their comfortable life. Everything else is secondary.

Look at them, the bugs. Humans have used everything in their power to extinguish them: every kind of poison, aerial sprays, introducing and cultivating their natural predators, searching for and destroying their eggs, using genetic modification to sterilize them, burning with fire, drowning with water. Every family has bug spray, every desk has a flyswatter under it… this long war has been going on for the entire history of human civilization. But the outcome is still in doubt. The bugs have not been eliminated. They still proudly live between the heavens and the earth, and their numbers have not diminished from the time before the appearance of the humans. The Trisolarans who deemed the humans bugs seemed to have forgotten one fact: The bugs have never been truly defeated. A small black cloud covered the sun and cast a moving shadow against the ground. This was not a common cloud, but a swarm of locusts that had just arrived. As the swarm landed in the fields nearby, the three men stood in the middle of a living shower, feeling the dignity of life on Earth. Ding Yi and Wang Miao poured the two bottles of wine they had with them on the ground beneath their feet, a toast for the bugs.

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

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.

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.

Afterwards, the princeps asked the science consul, “Did we destroy a civilization in the microcosmos in this experiment?” “It was at least an intelligent body. Also, Princeps, we destroyed the entire microcosmos. That miniature universe is immense in higher dimensions, and it probably contained more than one intelligence or civilization that never had a chance to express themselves in macro space. Of course, in higher dimensional space at such micro scales, the form that intelligence or civilization may take is beyond our imagination. They’re something else entirely. And such destruction has probably occurred many times before.” “Oh?” “In the long history of scientific progress, how many protons have been smashed apart in accelerators by physicists? How many neutrons and electrons? Probably no fewer than a hundred million. Every collision was probably the end of the civilizations and intelligences in a microcosmos.

The insanity of the human race had reached its historical zenith. The Cold War was at its height. Nuclear missiles capable of destroying the Earth ten times over could be launched at a moment’s notice, spread out among the countless missile silos dotting two continents and hidden within ghostlike nuclear-powered ballistic missile submarines patrolling deep under the sea. A single Lafayette- or Yankee-class submarine held enough warheads to destroy hundreds of cities and kill hundreds of millions, but most people continued their lives as if nothing was wrong. As an astrophysicist, Ye was strongly against nuclear weapons. She knew this was a power that should belong only to the stars. She knew also that the universe had even more terrible forces: black holes, antimatter, and more. Compared to those forces, a thermonuclear bomb was nothing but a tiny candle. If humans obtained mastery over one of those other forces, the world might be vaporized in a moment. In the face of madness, rationality was powerless. *

Equally important was the fact that the interpretation provided the model for how Tianming had hidden his message in the three stories. He employed two basic methods: dual-layer metaphors and two-dimensional metaphors. The dual-layer metaphors in the stories did not directly point to the real meaning, but to something far simpler. The tenor of this first metaphor became the vehicle for a second metaphor, which pointed to the real intelligence. In the current example, the princess’s boat, the He’ershingenmosiken soap, and the Glutton’s Sea formed a metaphor for a paper boat driven by soap. The paper boat, in turn, pointed to curvature propulsion. Previous attempts at decipherment had failed largely due to people’s habitual belief that the stories only involved a single layer of metaphors to hide the real message. The two-dimensional metaphors were a technique used to resolve the ambiguities introduced by literary devices employed in conveying strategic intelligence. After a dual-layer metaphor, a single-layer supporting metaphor was added to confirm the meaning of the dual-layer metaphor. In the current example, the curved snow-wave paper and the ironing required to flatten it served as a metaphor for curved space, confirming the interpretation of the soap-driven boat. If one viewed the stories as a two-dimensional plane, the dual-layer metaphor only provided one coordinate; the supporting single-layer metaphor provided a second coordinate that fixed the interpretation on the plane. Thus, this single-layer metaphor was also called the bearing coordinate. Viewed by itself, the bearing coordinate seemed meaningless, but once combined with the dual-layer metaphor, it resolved the inherent ambiguities in literary language. “A subtle and sophisticated system,” a PIA specialist said admiringly. All the committee members congratulated Cheng Xin and AA. AA, who had always been looked down on, saw her status greatly elevated among the committee members. Cheng

Of course, I’ve only brought up two examples. Other universal laws of physics have been used as weapons as well, though we don’t know all of them. It’s very possible that every law of physics has been weaponized. It’s possible that in some parts of the universe, even … Forget it, I don’t even believe that.” “What were you going to say?” “The foundation of mathematics.” Cheng Xin tried to imagine it, but it was simply impossible. “That’s … madness.” Then she asked, “Will the universe turn into a war ruin? Or, maybe it’s more accurate to ask: Will the laws of physics turn into war ruins?” “Maybe they already are.… The physicists and cosmologists of the new world are focused on trying to recover the original appearance of the universe before the wars more than ten billion years ago. They’ve already constructed a fairly clear theoretical model describing the pre-war universe. That was a really lovely time, when the universe itself was a Garden of Eden. Of course, the beauty could only be described mathematically. We can’t picture it: Our brains don’t have enough dimensions.” Cheng Xin thought back to the conversation with the Ring again. Did you build this four-dimensional fragment? You told me that you came from the sea. Did you build the sea? “You are saying that the universe of the Edenic Age was four-dimensional, and that the speed of light was much higher?” “No, not at all. The universe of the Edenic Age was ten-dimensional. The speed of light back then wasn’t only much higher—rather, it was close to infinity. Light back then was capable of action at a distance, and could go from one end of the cosmos to the other within a Planck time.… If you had been to four-dimensional space, you would have some vague hint of how beautiful that ten-dimensional Garden must have been.” “You’re saying—” “I’m not saying anything.” Yifan seemed to have awakened from a dream. “We’ve only seen small hints; everything else is just guessing. You should treat it as a guess, just a dark myth we’ve made up.” But Cheng Xin continued to follow the course of the discussion taken so far. “—that during the wars after the Edenic Age, one dimension after another was imprisoned from the macroscopic into the microscopic, and the speed of light was reduced again and again.…” “As I said, I’m not saying anything, just guessing.” Yifan’s voice grew softer. “But no one knows if the truth is even darker than our guesses.… We are certain of only one thing: The universe is dying.” The