- Human science is like a multi-story building. But the science of a civilization two steps ahead is like a tower built by gods. The foundations of our buildings cannot support such a tower. The Three-Body Problem
- The universe is darkness, and hope is just a spark born from us. The Three-Body Problem
- Civilizations evolved in the universe like passersby on thin ice over a river, and the ice beneath their feet is a continuous crack. At any moment, they could fall into the water beneath the ice and disappear without a trace. The Three-Body Problem