Liu Cixin Quotes

If you were to make a meatball out of humankind, its diameter would be less than a kilometer.

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 civil

I’ve always felt that the greatest and most beautiful stories in the history of humanity were not sung by wandering bards or written by playwrights and novelists, but told by science. The stories of science are far more magnificent, grand, involved, profound, thrilling, strange, terrifying, mysterious, and even emotional, compared to the stories told by literature. Only, these wonderful stories are locked in cold equations that most do not know how to read.

life was not so rare in the universe. In fact, the universe was downright crowded. How much has the universe been changed by life? A wave of terror threatened to overwhelm her. She knew that she could no longer save herself. She tried to stop thinking, to turn her mind into empty darkness, but a new question stubbornly refused to leave her alone: Is Nature really natural? Crisis Era, Year 4

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.

Mom, I'm going to be a firefly.

Are you under the impression that the object of everyone else’s love actually exists?

No banquet was eternal. Everything had an end. Everything.

Science and technology were the only keys to opening the door to the future, and people approached science with the faith and sincerity of elementary school students.

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

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. *

If this was so, then how many other acts of humankind that had seemed normal or even righteous were, in reality, evil?

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

As to the future of humanity, I’m essentially an optimist. I believe that with the advancement of technology, mankind has a hopeful future. But this optimistic view is based on reason: on one hand, whether the future will be bright or be dark depends largely on the choices we make today.

I really can’t keep it up anymore,” Huahua said.
“No one’s doing any better,” Specs said lightly.
“It’s not the same. This is impossible!”
“Think of yourself as a computer. You’re just cold hardware, and reality is just data. Accept your input and perform your calculations. That’s how you keep it up.