Kingsley opens with an apology. The speaker is about to part from a young girl and has nothing musical to give her: "no song to give you." The excuse is a pretty one, since no lark could sing under "skies so dull and grey." It sets a mood of leave-taking on a drab day, though the poem never says whether the grey is weather or feeling. What he can offer instead is "one lesson," and the second stanza delivers it: goodness matters more than cleverness, and doing matters more than dreaming. Kingsley was a Victorian clergyman as well as a novelist, and the poem's plain moral confidence suits that background. Nothing in the text, though, tells us who the child was or when the farewell took place.
The form is as modest as the speaker claims to be. There are two quatrains, each with three longer lines and a short fourth. The longer lines run close to iambic pentameter, and the rhyme is a simple ABAB. The first and third lines of each stanza end on an extra unstressed syllable: "give you," "leave you," "clever," "for-ever." These soft endings sound like a voice trailing off, or a hand lingering at a goodbye. The second and fourth lines close firmly on "grey," "day," "long," "song." The short last lines work like a door shutting. "For every day" and "One grand, sweet song" are each only a few syllables, and each leaves its idea standing alone. In the first stanza, "give you" and "leave you" rhyme on the word "you," so the sound of the verse keeps returning to the child it addresses.
The imagery is thin on purpose, and it all gathers around one idea, song. The lark and its piping belong to a pastoral world of morning and open sky, and the speaker says that world is closed to him today. Yet the poem ends with song after all. "Make life, death, and that vast for-ever / One grand, sweet song" turns the refused gift into the real one. A good life becomes the music he could not supply, and the lesson becomes the song. The verb matters too. You do not receive this song, you "make" it, so it is composed from deeds rather than words.
The word choices sharpen the contrast. "Be good" is set against "let who will be clever," and the shrug in "let who will" is half-humorous. It does not condemn cleverness. It simply stops caring who wins that competition. The next line makes a second pairing: "Do noble things, not dream them, all day long." The phrase "all day long" belongs to idleness, to daydreaming that fills the hours. It also echoes "every day" from the first stanza. The same days are meant to be filled either with imagining noble acts or with performing them, and the poem knows which it prefers.
The last two lines also widen their scale. We begin with a single day and then move to "life, death, and that vast for-ever." The hyphen splits "for-ever" into two slow beats, as if the word itself were stretching out. Death is named quietly, as one item in a list, and is not allowed to frighten. If the child has lived well, even that is a note in the same tune. The closing pair "grand, sweet" joins two registers, the noble and the tender. That fits a poem that calls a girl both "fairest child" and "sweet maid," and it suggests she is growing up between one stanza and the next, though that is an inference from the wording.
The poem lasts because it is so compact and so quotable. Its first line of advice sticks in the memory without effort. Modern readers may smile at "sweet maid" or ask whether goodness and cleverness must really compete. But the poem argues about priorities, not prohibitions. It also practises what it preaches. A speaker who admits he cannot sing could have dreamed up a grander present. Instead he does the small, real thing and hands over eight lines that a child could remember for life.