Lettuce is like conversation; it must be fresh and crisp, so sparkling that you scarcely notice the bitter in it.

Charles Dudley Warner (1829–1900), an American essayist and editor associated with the late-19th-century “genteel” tradition, often used domestic and culinary images to make social observations. This aphorism belongs to his light, reflective prose about everyday life and manners—writing that treats the dinner table and the drawing room as places where character is revealed. In that milieu, “conversation” was a cultivated art, expected to be lively, civil, and refreshing rather than heavy or contentious. The comparison to lettuce—an ingredient valued for crispness and freshness—fits Warner’s habit of turning ordinary objects into moral-social commentary, suggesting the quote likely comes from one of his essay collections rather than a speech or political document.

Warner likens good conversation to good lettuce: it should feel fresh, crisp, and pleasantly “sparkling,” not wilted, stale, or over-seasoned with bitterness. The line implies that some bitterness—sharp truths, irony, disagreement, or the inevitable sourness of human experience—may be present in talk, but it should be so well-balanced by wit, tact, and vitality that it doesn’t dominate. The ideal is not blandness but proportion: conversation that is animated and light on its feet can carry difficult or critical notes without becoming rancorous. In effect, Warner offers a standard of sociability: keep discourse lively and renewing, and bitterness becomes a subtle flavor rather than the main course.