Jewish values persist tenaciously in post-World War II American literature, even as Jewish-American writers publicly embrace assimilation. Through distinctive emotional intensity and moral preoccupations, rather than explicit cultural content, authors like Arthur Miller, Philip Roth, Bernard Malamud, and Saul Bellow unconsciously perpetuate a uniquely Jewish literary voice. Close textual analysis of their works, combined with examination of critical reception and reader responses, reveals a compelling paradox: as these writers seek universal acceptance, they simultaneously embed particularistic Jewish concerns including heightened sensitivity to suffering, moral responsibility, and social justice. Like the hidden identities of Marranos during the Inquisition, Jewish cultural values survive in transformed, underground forms within mainstream American writing. The research demonstrates that authentic literary expression flourishes when writers acknowledge rather than suppress these distinctive cultural influences, suggesting American literature is enriched by recognizing both its universal and uniquely Jewish qualities.