Atlas Shrugged, novel by Ayn Rand, published in 1957. The book’s female protagonist, Dagny Taggart, struggles to manage a transcontinental railroad amid the pressures and restrictions of massive bureaucracy. Her antagonistic reaction to a libertarian group seeking an end to government regulation is later echoed and modified in her encounter with a utopian community, Galt’s Gulch, whose members regard self-determination rather than collective responsibility as the highest ideal. The novel contains the most complete presentation of Rand’s personal philosophy, known as objectivism, in fictional form.