Edward Thomas starts "The Glory" like a hymn that cannot wait to begin. "The glory of the beauty of the morning" stacks one "of" on another, and the sentence has no verb. Cuckoo, dew, blackbird, dove, clouds and heat arrive as a list, and we stand in the meadow for seven lines before the main clause finally appears: "The glory invites me." The delay is part of the point. The speaker is so absorbed in looking that he forgets to ask what he is meant to do about it.
The answer is that he feels shut out. The glory "invites" him, "yet it leaves me scorning / All I can ever do, all I can be." That is a startling reaction to a lovely morning. Beauty shames him instead of comforting him, because it makes his own life look small. The phrase "sublime vacancy" works two ways. It describes the open sky, and it also describes his "own heart," which is slipped in at the end of the list as if it were just another bit of scenery. Emptiness here is both room for wonder and a sign of lack.
From there the poem becomes a run of questions: "Shall I now this day / Begin to seek…?", "Or must I be content with discontent…?", "And shall I let all go…?" None is answered. The imagined quest is grand ("as far as heaven, as hell"), yet the path is small and concrete, "pale dust pitted with small dark drops." Thomas keeps pulling the cosmic back to the ground, and the creatures of the "hazel copse" are only "happy-seeming," because the speaker cannot know what they feel. The same doubt colours the bird image: perhaps larks and swallows are content with their wings as he must be "content with discontent." That paradox sounds like wisdom, but it is closer to resignation, and the word "perhaps" shows he does not believe it.
The form carries this restlessness. The poem is one unbroken block of twenty-eight lines, roughly iambic pentameter, with sentences that spill over line-endings and stop mid-line for another question. The rhymes are loose. "Dove" and "love" click together early, but later ones arrive late and at odd distances: "dew" is answered by "hue" eight lines on, and "discontent" waits until "meant" and "pent." The rhyme seems to reach for closure and keep missing it, much as the speaker's thinking does. Near the end, "more," "before" and "core" finally gather, and the poem lands.
The last lines turn from beauty to time. The speaker admits he is "fast pent," a creature held in, and calls Time "dreary-swift, with naught to travel to." That oxymoron says that time rushes and yet goes nowhere. Against it he allows one hopeful thought, that he may realise he "was happy oft and oft before." Happiness might be something already had and overlooked, noticed only when he stops chasing it.
Then comes the closing line, all plain monosyllables apart from "core": "I cannot bite the day to the core." After so many questions it is a flat statement. The image makes the day a fruit and the speaker a hungry mouth, and "bite" is blunt and physical after all the abstract talk of wisdom and happiness. He can take a bite, but he cannot reach the centre, however much he wants it.
The poem is significant because it refuses the easy script of nature poetry, in which a lovely morning heals the troubled mind. Thomas begins in something close to rapture and ends in honest limitation. Beauty here is not a cure. It exposes how far desire outruns what a person can take in. Readers who have felt that a perfect day was somehow wasted by trying too hard to catch it will recognise the feeling at once, and Thomas gives it a voice without pretending to solve it.