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- I knew a young lady of the last "romantic" generation who after some years of an enigmatic passion for a gentleman, whom she might quite easily have married at any moment, invented insuperable obstacles to their union, and ended by throwing herself one stormy night into a rather deep and rapid river from a high bank, almost a precipice, and so perished, entirely to satisfy her own caprice, and to be like Shakespeare's Ophelia.Book 1 -- The History Of A Family (3% in)
There are no more uses of "insuperable" in The Brothers Karamazov.
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