“for the existentialists, what generated anxiety was not the godlessness of the world, per se, but rather the freedom to choose between God and godlessness. Though freedom is something we actively seek, the freedom to choose generates anxiety. “When I behold my possibilities,” Kierkegaard wrote, “I experience that dread which is the dizziness of freedom, and my choice is made in fear and trembling.” Many people try to flee anxiety by fleeing choice. This helps explain the perverse-seeming appeal of authoritarian societies—the certainties of a rigid, choiceless society can be very reassuring—and why times of upheaval so often produce extremist leaders and movements: Hitler in Weimar Germany, Father Coughlin in Depression-era America, or Jean-Marie Le Pen in France and Vladimir Putin in Russia today. But running from anxiety, Kierkegaard believed, was a mistake because anxiety was a “school” that taught people to come to terms with the human condition.”