...By surveying the effect of wars, financial panics, and other crises over the course of a century, Higgs showed that most government growth occurs in sporadic bursts during emergencies, when politicians enact “temporary” programs and regulations that never get fully abolished. New Deal bureaucracies and subsidies persisted long after the Great Depression, for example, and the U.S. military didn’t revert to its prewar size after either of the world wars.
Besides charting the growth of government, Higgs identified the fundamental psychological cause. He recognized the political significance of the negativity effect, also called the negativity bias—the universal tendency of negative events and emotions to affect us more strongly than positive ones.
...“To tell people not to be afraid is to give them advice that they cannot take,” Higgs wrote. “Our evolved physiological makeup disposes us to fear all sorts of actual and potential threats, even those that exist only in our imagination. The people who have the effrontery to rule us, who call themselves our government, understand this basic fact of human nature. They exploit it, and they cultivate it.” Rulers instinctively heed Machiavelli’s advice: “It is much safer to be feared than loved”—a sixteenth-century formulation of the negativity effect.
“Without popular fear, no government could endure more than twenty-four hours,” Higgs wrote....