Death's End (Remembrance of Earth’s Past, #3)

by Liu Cixin

Once the technology was successfully commercialized, those who could afford it would use it to skip to paradise, while the rest of humanity would have to stay behind in the comparatively depressing present to construct that paradise for them.

at some point, humanity began to develop the illusion that they’re entitled to life, that life can be taken for granted. This is the fundamental reason for your defeat. The flag of evolution will be raised once again on this world, and you will now fight for your survival. I hope everyone present will be among the fifty million survivors at the end. I hope that you will eat food, and not be eaten by food.”

Deterrence made a comfortable cradle, and as humanity napped inside, it regressed from an adult to a child.”