How did Jean de La Fontaine transform the simple stories of earlier fabulists?

Jean de La Fontaine transformed the simple stories of earlier fabulists—who typically told them perfunctorily to serve narrow didactic goals—by elevating them into sophisticated literary works. Rather than using stories merely to illustrate rudimentary morals, he crafted them into "miniature comedies and dramas" that offer subtle, mature commentary on the human experience.12

His transformation of the genre involved several key techniques:

• Characterization: He excelled at rapid characterization through deft sketches of appearance, gestures, and expressive, invented discourse.1
• Stylistic Richness: He utilized a diverse vocabulary that blended archaic, burlesque, refined, and rustic elements, employing varying meters and unpredictable rhythms to achieve exquisite tonal effects.1
• Nuanced Morality: He recognized that moral truths are rarely simple. His fables often amend traditional morals, suggesting that only the naive would accept them at face value.2
• The Voice of the Poet: Unlike his predecessors, La Fontaine infused his work with his own controlled, lyrical voice, shifting between ironical, eloquent, and reflective tones to engage the reader in a shared understanding of the "human comedy".1

Ultimately, he replaced rigid instruction with la gaiet\u00e9—a charm that allows even serious subjects to be explored with grace and depth.1