A work is perfectly finished only when nothing can be added to it and nothing taken away.

Joseph Joubert (1754–1824) was a French moralist and essayist best known for his posthumously published notebooks—brief reflections on style, ethics, education, and taste rather than finished treatises. This remark belongs to that tradition of aphoristic criticism that emerged in late Enlightenment and early Romantic France, where writers and salon intellectuals debated clarity, concision, and the “juste” expression. Joubert, who admired classical restraint and distrusted rhetorical excess, repeatedly returned in his notes to the idea that true artistry lies in selection and omission. The saying is often cited in discussions of revision and editorial discipline.

The aphorism defines perfection not as maximal elaboration but as an equilibrium: the work has reached a point where every element is necessary and no element is missing. “Nothing can be added” implies completeness of intention—no further explanation, ornament, or subplot is required. “Nothing taken away” implies economy—no sentence, image, or detail is merely decorative or redundant. Joubert thus frames artistic finishing as a test of necessity, aligning aesthetic excellence with restraint. The idea has become a touchstone for writers, designers, and engineers because it treats revision as subtraction as much as invention: polish is achieved by removing what does not serve the whole.