The Sand Castle by Iris Murdoch

A quietly observant study of a middle-aged philosophy lecturer whose sudden infatuation with a much younger woman upends his comfortable domestic life and professional ambitions; as desire and jealousy collide with moral principle, the novel traces the disintegration of relationships, the compromises of public reputation, and the painful consequences of confusing idealism with possession, all rendered with psychological acuity and ironic compassion.

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