Why did Renaissance humanists think people should study classical works?

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People could improve their earthly lives.
Reading classical works would deepen one's religion

Classical works were seen as a source of wisdom, knowledge, and culture.

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Studying classical works was believed to enhance one's understanding of human nature.
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Classical works were seen as the foundation of Western literature, art, and philosophy.
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Studying classical works allowed individuals to engage with the great minds of the past and learn from their experiences and insights.