Thirteen words, two lines, and a whole attitude to life gets served and then quietly cleared away. The first line, "to dine well is to live," sounds like a motto stitched on a kitchen towel. It is lowercase, unpunctuated and flatly confident, and it makes a bold equation: living is eating well, and appetite is the proof of being alive. The second line turns from the general to the personal ("I"), and from the timeless present to the future ("will be"). It borrows a familiar idiom, "fit as a fiddle," and swaps the fiddle for an urn. We expect a phrase for glowing health and get a vessel for ashes.
That swap is the poem's joke and its sting. The title, "Fitness," promises the language of gyms and good habits, but "fit" is a slippery word. It can mean healthy, and it can also mean suitable, as in "fit for purpose." The speaker will be fit in both senses: in splendid condition, and perfectly suited to the urn. There is even a third, almost literal meaning, since ashes fit inside an urn. The poem never says "die" or "death." It lets one object do the work, and the reader supplies the rest. If dining well is living, the last course has to be somewhere, and the poem quietly shows us where.
The sound of the lines supports this slide. There is no end rhyme, and "live" and "urn" don't chime, which feels right for a poem about an ending that doesn't match the beginning. Inside the lines, though, small echoes hold things together: "well" and "will" are nearly twins, "dine" and "I" share a long vowel, and "live" and "fit" share a short one. The rhythm of the first line is unhurried. "To DINE WELL is to LIVE" puts two stresses side by side in the middle, so the voice slows down as if savouring something. The second line, "I will be FIT as an URN," skips lightly over its small words and then lands on a heavy final syllable. "Urn" is a closed, hollow sound, and the mouth almost shuts around it. After that comes no full stop, only white space, so the poem stops the way a meal or a life might, without ceremony.
Imagery is scarce here, which makes the one image count. Everything in the first line is abstract: dining, living. Only in the last word does something solid appear, a thing you could pick up and put on a shelf. Judging by the context, a funeral urn is the obvious reading, but the shape of the object suggests more. An urn is a container, and so, in a way, is a body that has been well fed. The poem hints at a symmetry between filling and being filled, between the person who takes in food and the vessel that eventually takes in the person. Whether this is rueful, cheerful or defiant depends on how you hear it. It could be an epicure's shrug ("so be it, pass the wine") or a grim wink at the cost of pleasure.
What makes the poem worth reading is how much it does with so little. It touches an old and familiar line of thought, that we should enjoy life because it ends, without lecturing us about it. Instead it relies on a trick of expectation. Because we know the idiom, our minds fill in "fiddle" a split second before the poem says "urn," and that tiny collision is where the meaning happens. The reader, like the speaker, is caught mid-bite.
The poem also leaves a useful question for discussion: are the two lines in tension, or are they one sentence? You could read "live" and "urn" as opposites, with life on one side and death on the other. You could also read the second line as the logical outcome of the first, the bill arriving after a good dinner. Neither reading cancels the other, and that open space between them is why such a short poem lingers.