He was famous for his fiction from the Foundation series to I Robot, but his science books were his masterpieces of lucidity.

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But after being taken to hospital in Gloucester, and in a "rare moment of lucidity", Mrs Fuller told her sister that she and her husband were splitting up, claiming that "they had talked and he understood".

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It is the gentle yet penetrating lucidity of Mr Eugenides's writing that makes a slightly humdrum plot into so involving a novel.

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Lucidity and opacity, ordinary delights and exotic peculiarities blend breezily in an intimate jest of vast wonder.

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