“Do not go gentle into that good night”
The title line and first refrain. The word gentle is an adjective where we expect the adverb gently: the listener is not just to avoid acting gently, but not to be gentle, not to become a meek thing. The phrase "that good night" is a triple pun: nightfall, the bedtime farewell, and death itself. Calling the night "good" quietly concedes that death may be natural and even kind, which makes the command to resist it more moving, not less. The gentle long vowels of the line contrast with the harsh energy of the second refrain.
DefianceDeath
“Rage, rage against the dying of the light”
The counter-refrain. The repeated monosyllable "Rage" opens with a double stress that breaks the iambic flow: the line performs the fury it demands. The phrase "the dying of the light" makes death a slow extinguishing rather than a sudden event. Note the verb is "rage", not fight or win: the poem asks for passion, not victory. The two refrains finally stand side by side as a couplet in the last stanza, command and exhortation fused.
DefianceLight and dark
“Old age should burn and rave at close of day”
The thesis of the whole argument. The verb "burn" begins the poem’s fire imagery (lightning, sun and meteors all follow), making vitality a kind of combustion. The word "rave" is startling: it means to behave wildly, as someone delirious or furious does, and the poem embraces that loss of self-control. Dignified acceptance is exactly what the speaker rejects. The phrase "close of day" establishes the governing metaphor of life as a single day now reaching evening.
DefianceLight and dark
“Because their words had forked no lightning they”
Why do even the wise resist a death they know is "right" (line 4)? Because their words never struck home: "forked no lightning" imagines language as a natural force that should split the sky, and theirs did not. For a poet, one reading goes, this is the nightmare of words without power. The line ends on "they" with no punctuation, so the sentence runs on into the refrain at line 6, which becomes the wise men’s own verb. Their intellectual acceptance of death is overruled by a sense of unfinished work: a good example of the poem’s logic of regret.
RegretDefiance
“Their frail deeds might have danced in a green bay”
The good men, "the last wave by" (line 7), cry that their modest moral actions could have shone more brightly in a kinder setting. The phrase "frail deeds" is a poignant admission of smallness; "danced" gives those deeds a lost gaiety; "green bay" holds the poem’s only colour word, and bay can mean a curve of shore or the laurel that crowned victors. The wave metaphor matters too: a wave’s whole existence is its brief breaking, so on one reading the good men are also mourning the shortness of any human life.
RegretLight and dark
“And learn, too late, they grieved it on its way”
The wild men "sang the sun in flight" (line 10), living so intensely that they seemed to celebrate time itself, and learn that they "grieved it on its way": their delight in the passing sun was also mourning for it. On one reading their revelry even hastened the day they celebrated. The phrase "too late", held between commas, is the bleakest in the poem: some knowledge arrives only when it is useless. Yet even these men do not go gentle; regret converts itself into resistance.
RegretLight and dark
“Blind eyes could blaze like meteors and be gay”
"Grave men" (line 13) is the poem’s sharpest pun: serious men, and men at the edge of the grave. The paradox of "blinding sight" in the previous line and blazing "Blind eyes" here insists that loss of sight can coexist with visionary intensity. The simile "like meteors" is exact: a meteor burns brightest precisely as it is destroyed. The word gay is used in its older sense, joyful and bright. Many readers find the line almost unbearably personal, hearing the poet’s father in it. His sight was failing by 1951, but the poem does not say these eyes are his: the Context section explains why the link is a reading rather than a fact.
Light and darkDefiance
“And you, my father, there on the sad height”
The volta. After fifteen lines in which the listener goes unnamed, twelve of them a generalised argument about kinds of men, the poem turns to its real subject, and the change of pronoun ("you") lands like a confession. The phrase "the sad height" suggests a summit at the end of life’s climb, a place of lonely eminence; some readers see a deathbed raised above the watching son, or a place of suffering. Its quiet sorrow contrasts with the fire imagery everywhere else: here, finally, is plain grief.
Father and sonGrief
“Curse, bless, me now with your fierce tears, I pray”
A line of compressed contradictions. The antithesis "Curse, bless" asks for opposite things at once because any passionate response, fury or love, would prove the father still burns. The phrase "fierce tears" fuses rage and grief into a single image. The commas after "Curse" and "bless" break the line into a series of sobs, the second cutting the verbs off from "me". And "I pray", after the commands of the first stanza, admits the truth: the son has no power here at all. The poem ends by repeating both refrains, a son chanting against the dark.
Father and sonGrief