Moral Evolution

Among all life on Earth, we alone experience rich moral emotions, follow complex rules governing how we treat one another, and engage in moral dialogue. But how did human morality evolve? And can humans become morally evolved? In A Better Ape, Victor Kumar and Richmond Campbell draw on the latest research in the biological and social sciences to explain the key role that morality has played in human evolution.

In 2018, scientists manipulated the DNA of human babies for the first time. As biologist and historian Matthew Cobb shows in As Gods, this achievement was one many scientists have feared from the start of the genetic age. Four times in the last fifty years, geneticists, frightened by their own technology, have called a temporary halt to their experiments. They ought to be frightened.

In this book, evolutionary psychologist Dennis Krebs explains how virtuous behaviors such as altruism, justice, honesty, loyalty, self-control, purity, and respect for authority, have evolved in humans and other species. He argues that the key to solving puzzles of morality—such as what it is, how we acquire moral traits, why we sometimes behave badly, and how we make moral decisions—lies in figuring out what adaptive functions moral traits served in early human environments and how they are influenced by social learning, culture, and strategic social interactions in the modern world.

How did humans, a species of self-centered apes, come to care about others? Since Darwin, scientists have tried to answer this question using evolutionary theory. In The Kindness of Strangers, psychologist Michael E. McCullough shows why they have failed and offers a new explanation instead. From the moment nomadic humans first settled down until the aftermath of the Second World War, our species has confronted repeated crises that we could only survive by changing our behavior.