Daniel Smith is a nonfiction author and editor who has written across a range of subjects, including politics, economics, and social history. He is the author of The Little Book of Big Ideas: 150 Concepts and Breakthroughs that Transformed History and the "How to Think Like . . . " series for Michael O'Mara Books, which has been published in 20 languages and sold over 450,000 copies worldwide. He is also a long-time contributor to The Statesman's Yearbook, the geo-political guide to the world that celebrated its 150th anniversary in 2013. He lives in London with his wife and two children.