Julius Caesar was one of the thirty-four Roman emperors (out of the total of forty-nine that reigned until the division of the empire) who were killed by guards, high officials, or members of their own families.

the political scientist James Payne suggests that ancient peoples put a low value on other people’s lives because pain and death were so common in their own. This set a low threshold for any practice that had a chance of bringing them an advantage, even if the price was the lives of others.

An Englishman, a Frenchman, and a Jew are sitting in a doctor’s waiting room and each is told he has twenty-four hours to live. They are asked how they plan to spend their final day. The Englishman says, “I’m going to my club to smoke my pipe, sip some sherry, and chat with the blokes.

Social psychology, the science of how people behave toward one another, is often a mishmash of interesting phenomena that are “explained

The human mind tends to estimate the probability of an event from the ease with which it can recall examples, and scenes of carnage are more likely to be beamed into our homes and burned into our memories than footage of people dying of old age.1 No matter how small the percentage of violent deaths may be, in absolute numbers there will always be enough of them to fill the evening news, so people’s impressions of violence will be disconnected from the actual proportions.

Some biblical scholars believe that the story of the fall from the Garden of Eden was a cultural memory of the transition from foraging to agriculture: “In the sweat of thy face shalt thou eat bread.

People in a connected world are exposed to the stories of strangers through many channels, including face-to-face encounters, interviews in the media, and memoirs and autobiographical accounts.

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