Good humor is one of the best articles of dress one can wear in society.

Thackeray’s aphorism treats “good humor” as a form of social attire—an outward, chosen presentation that shapes how one is received. By calling it an “article of dress,” the line suggests that geniality and patience function like good manners: they smooth interactions, reduce friction, and can be more persuasive than status or ornament. The quote also carries a mild satiric edge typical of Thackeray, implying that society often judges surfaces; if so, the most effective surface is not luxury but a temperament that puts others at ease. It elevates emotional self-command into a practical social virtue.