The speaker describes being "condemned" to live among too many things, a word that makes plenty sound like a prison sentence. Instead of simply complaining, though, the speaker says this situation has led to "a philosophical manner of life." Having so much stuff, it seems, pushes a person to stop and think about what it all means.
The final image carries the poem. A fine fish in a glass of water is well looked after and on display, but it has almost no room to swim. The comparison suggests the speaker feels both valued and confined, like a pet or a possession as much as a buyer of possessions. The title, "Consumer," hints at this twist: the one who consumes may be shaped and held by what surrounds them.
The mood is quiet, wry, and a little uneasy. The tone stays calm and even slightly amused, yet the small glass leaves a lingering sense of limits. The speaker accepts the situation, but the poem leaves you wondering whether that acceptance is wisdom or resignation.