Ayn Rand is recapturing the hearts of American conservatives. The Cold War writer’s individualist philosophy is back in fashion among the Republican faithful. Her 1957 novel Atlas Shrugged has just been released as a movie and while critics call it slow and two-dimensional, Tea Partiers are queuing around the block to see it. Something about Rand’s take-no-prisoners prose strikes a chord with people exasperated by Obama’s tax-and-spend liberalism and desperate for a road-map to liberty. But Ayn Rand is not a natural pin-up for American conservatives. Her individualism went beyond libertarianism. It was an exciting, revolutionary mix of greed, atheism,...