How many people do you know who studied French in school or spent a year abroad in college but now regret losing the language they once loved? Maybe you're one of them. Your eyes stay glued to the subtitles during a French film. Classes seem scary, expensive, or both. A week in Paris, let alone a year in Provence, seems beyond reach. So what could keep your fervor for language alive or reignite it after such a long hiatus? In The Heart of an...