The Heterosexual Revolution - New York Times: "The first step down the road to gay and lesbian marriage took place 200 years ago, when Enlightenment thinkers raised the radical idea that parents and the state should not dictate who married whom, and when the American Revolution encouraged people to engage in 'the pursuit of happiness,' including marrying for love. Almost immediately, some thinkers, including Jeremy Bentham and the Marquis de Condorcet, began to argue that same-sex love should not be a crime.

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