In 1854, a young Russian artillery officer viewed the battlefield carnage occurring far below his cannon’s hilltop placement. “It’s a funny sort of pleasure,” Leo Tolstoy wrote, “to see people killing each other. And yet, every morning and every evening, I would . . . spend hours at a time watching.”

Tolstoy’s outlook soon changed. After seeing firsthand the devastation and suffering in the city of Sevastopol, he wrote, “You understand all at once, and quite differently from what you have before, the significance of those sounds of shots which you heard in the city.”

The prophet Jonah once climbed a hill…