Themes
Things won are done, joy’s soul lies in the doing.
— William Shakespeare ‧ Troilus and Cressida

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Winning marks an ending, while working toward something supplies the activity that makes it enjoyable. The line locates pleasure in pursuit rather than possession. Once a thing has been won, the doing that animated it is already over.
Context reviewed