The Dark Forest: Remembrance of Earth’s Past #2 (2008/2015) by Cixin Liu & The Future of Humanity
“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. Those civilizations make up the body of a cosmic society. Cosmic sociology is the study of the nature of this super-society” (p 12).
