In 1979, seemingly overnight—moving at a clip some thirty years faster than the rest of the world—Iran became the first revolutionary theocracy in modern times. Since then, the country has been largely a black box to the West, a sinister presence looming over the horizon. But inside Iran, a breathtaking drama has unfolded since then, as religious thinkers, political operatives, poets, journalists, and activists have imagined and reimagined what Iran should be. They have drawn as deeply on the traditions of the West as of the East and have acted upon their beliefs with urgency and passion, frequently staking their lives for them.