Describing phalanx warfare, Thucydides wrote that “fear makes every man want to do his best to find protection for his unarmed side in the shield of the man next to him on the right.” The soldier farthest right must try to “keep his own unarmed side away from the enemy, and his fear spreads to the others who follow his example.” The effect of this fear, wrote the historian: “the right wing tends to get unduly extended.”

Engineers at the University of Illinois published a paper in 1960 predicting doomsday would occur November 13, 2026, based on calculations of human-population growth; they hoped “some time, somehow, something will happen that will stop this ever-faster race to self-destruction.” One idea was space travel. “It is only unfortunate,” they wrote, “that no reentry permit to earth can be given to these space trotters.”

A surgeon in the British navy published an 1816 treatise on “The Incubus, or Nightmare, Disturbed Sleep, Terrific Dreams, and Nocturnal Visions,” arguing against folk beliefs that nightmares resulted from overindulgence and sleeping on one’s back. Sufferers “can bear testimony to the distress and alarm,” he wrote, “in many cases rendering the approach of night a cause of terror, and life itself miserable.”

During the Middle Ages, wild animals were often believed to be devil-possessed. Wolves, moles, and caterpillars were tried in courts and executed. A story is told of Saint Dominic catching a sparrow, plucking it alive, and rejoicing in his triumph over the powers of darkness. By 1531 a legist argued that “rural pests would simply laugh” at civil-court censure but “have greater fear” of the Church’s power of anathema and should be excommunicated.

“I look at the jury and they won’t look at me,” testified Charles Manson during his 1970 trial for conspiracy to murder. “They are afraid of me. And do you know why they are afraid of me? Because of the newspapers. You projected fear. You projected fear. You made me a monster, and I have to live with that the rest of my life.”