In 2012, science writer John Horgan published a book called The End of War. Its premise is that we have it in ourselves to tame our violent impulses, at least enough to stop waging large-scale, collective war. At first blush, this notion seems as quixotic and naive as a famous John Lennon and Yoko Ono song. But Horgan wants us to seriously give peace a chance. From the book's preview:
War is not preordained, and furthermore, it should be thought of as a solvable, scientific problem—like curing cancer. But war and cancer differ in at least one crucial way: whereas cancer is a stubborn aspect of nature, war is our creation. It’s our choice whether to unmake it or not.