World Brain is H. G. Wells’ prescient description of something akin to Wikipedia in a collection of essays and addresses dating from the period of 1936 to 1938. Throughout the book, he describes his vision of a new, free, synthetic, decentralized, permanent “World Encyclopædia” that could help world citizens make the best use of universal information resources, arguing that access to such a common interpretation of reality would increase individuals’ abilities to make positive contributions to world peace.