# Chiaroscuro: the pattern matters more than the quantity of light

Commentary on Orthodoxy by G. K. Chesterton.

On [CH07.P018](https://glosses.org/orthodoxy/pg16769-r1/CH07.P018/#char=619,664): "a piece of elaborate and artistic chiaroscuro"

Chiaroscuro means light–dark: the National Gallery describes contrasts of tone used to give depicted things volume and modelling, with Leonardo and Caravaggio as examples of its different expressive uses. The inspected source is the Gallery's current online glossary, an undated explanatory entry. [National Gallery, ‘Chiaroscuro’](https://www.nationalgallery.org.uk/paintings/glossary/chiaroscuro).

The word sharpens Chesterton's example. A painting does not improve simply by receiving more light or more darkness; the tones have to stand in expressive relations. His discoloured old picture and faded old coat undergo changes in an overall direction, whereas the imagined artwork needs particular differences in particular places. This is why he passes from several colours to black and white: even reducing the palette to two extremes leaves the problem of composition. The metaphor prepares his demand for virtues held in a definite proportion. It does not mean that evil must be preserved to improve the moral picture: the chapter's ensuing examples concern the relation between desirable attitudes such as wonder and courage. That distinction belongs to the interpretation of Chesterton's argument, rather than to the technical definition of the art term.

## Sources

- [National Gallery, London, ‘Chiaroscuro,’ online glossary (undated; inspected 2026-11-07)](https://www.nationalgallery.org.uk/paintings/glossary/chiaroscuro), Entry ‘Chiaroscuro,’ two explanatory paragraphs
- [G. K. Chesterton, Orthodoxy (1908); Project Gutenberg #16769](https://www.gutenberg.org/ebooks/16769), Chapter VII, assigned paragraph and paragraph beginning ‘This, however, is hardly our main point at present’

Revision 1 · 2026-11-07 · https://glosses.org/a/a_7fcqnh7j/