Sapiens follows the development of Homo sapiens — from a negligible African primate to the global species that rules over the planet. In four parts — the Cognitive Revolution, Agricultural Revolution, Unification of Humankind, and the Scientific Revolution — the book is a grand history of human evolution. Harari does not only look at the biological and historical developments that gave rise to us, but also at the ideologies, myths, religions, economies, and technologies that propel civilization forward.More than a linear chronology, Sapiens is a thematic survey of turning points in human history, e.g., how humans have invented imagined worlds such as money, nations, and religion, or how farming might have lowered living standards despite advances in technology.