(SLATE) -- Ask Republican vice presidential nominee Paul Ryan how he became a conservative and he’ll probably answer by citing a book. It might be Ayn Rand’s Atlas Shrugged. Or perhaps he’ll come up with Friedrich Hayek’s Road to Serfdom, or even Barry Goldwater’s Conscience of a Conservative. All of these books are staples of the modern conservative canon, works with the reputed power to radicalize even the most tepid Republican. Over the last half-century, they have been vital to the conservative movement’s success—and to liberalism’s demise.
We tend to think of the conservative influence in purely political terms: electing Ronald Reagan in 1980, picking away at Social Security, reducing taxes for the wealthy. But one of the movement’s most lasting successes has been in developing a common intellectual heritage. Any self-respecting young conservative knows the names you’re supposed to spout: Hayek, Rand, Ludwig von Mises, Albert Jay Nock. There are some older thinkers too—Edmund Burke, for instance—but for the most part the favored thinkers come out of the movement’s mid-20th century origins in opposition to Soviet communism and the New Deal.