This volume gives evidence for the unity of knowledge in evolutionary biology, the evolutionary social sciences, and the evolutionary humanities. It contains 14 separately authored essays, a foreword by Alice Dreger, a theoretical introduction by Joseph Carroll, and afterwords by David Sloan Wilson and Jonathan Gottschall. Edward O. Wilson, Christopher Boehm, Herbert Gintis, Michael Rose, and Henry Harpending discuss human social evolution. Barbara Oakley integrates psychology and engineering. Dan P. McAdams delineates a model of human identity, and Carroll and his collaborators use a similar model for a quantitative study of Victorian novels. Ellen Dissanayake and John Hawks probe the mystery behind the markings ancient humans made on stones. Brian Boyd uses cognitive psychology to analyze poetry and comics. Catherine Salmon and Mathias Clasen use evolutionary psychology to explain salient genres of popular culture: horror fiction, professional wrestling, romance novels, and male adventure novels.