How the idea moved: 4 landmark works

1. 1177Lancelot, the Knight of the CartChrétien de TroyesEvolutionNovel

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2. 1186De AmoreAndreas CapellanusEvolutionPhilosophical Text

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3. 1972The Flame and the FlowerKathleen E. WoodiwissOriginNovel

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4. 1977The Thorn BirdsColleen McCulloughEvolutionNovel

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