“It is the other arts that taught me writing” was attributed to Stendhal –fictional or not, this rings familiar to me. While I’m not virtuous in English, I think of writing similarly to how I think of design and value (not in any order but in synergy):

• The form, how richly is formatted and thoughtfully curated.
• The function, how well is written following the given grammar standards.
• The significance, how relevant, contextual, and meaningful.
• And that elusive duende that Lorca described so precisely.