Up from Dragons: The Evolution of Human Intelligence is a 2002 book on human evolution, the human brain, and the origins of human cognition by John Skoyles and Dorion Sagan. The book considers how the brain and genes evolved into their present condition over the course of thousands and millions of years. It was published by McGraw Hill. The title relates to Carl Sagan (co-author Dorion Sagan's father) and his 1977 book The Dragons of Eden for which this book provides a 25th-anniversary reappraisal.