An epitaph has a strange job: to sum up a life in a few lines, for strangers, in stone. Pope's lines for the painter Sir Godfrey Kneller, set in Westminster Abbey, do it in eight. They end on a joke so bold that it flatters not only the dead man but Nature herself.
The argument is easy to follow. Kneller was taught "by Heaven, and not a master". His art was so faithful that it equalled Nature, and his portraits showed Thought as well as faces. For "two ages" he rescued beauty and greatness from Fate, and now he lies honoured by princes and poets alike. Then comes the twist. While he lived, Nature feared he might "outvie" her works. Now that he is dead, she fears that she herself may die. The central idea is that a great artist is no mere servant of Nature but her rival, and when he goes the world feels a little less alive.
The poem is built from heroic couplets, rhymed pairs of iambic pentameter: taught/Thought, Fate/great, lays/praise, then outvie/die. Look at how the first sentence is put together. Kneller is named at the very start, but the main verb, "Lies", is held back until line five, after a long run of descriptive clauses. The delay works like a procession arriving at a grave, and the plain, heavy "Lies" settles the whole accumulated list of achievements into stillness.
Line two is the most compressed. "Whose art was Nature, and whose pictures Thought" drops the verb the second time, so the two halves sit side by side like equations. Pope does not say Kneller's art imitated Nature. He says it was Nature, which is a much larger claim. The idea fits the period, since Pope's *Essay on Criticism* famously tells writers to "follow Nature". "Thought" is the surprising word. Judging by the line, Kneller's portraits are praised for catching a mind behind a face, not for pretty paint. The next lines push the praise further. "Snatch'd from Fate" makes painting sound like a rescue from a thief, and the repeated "whate'er... whate'er" sweeps up everything beautiful or great in a single gesture.
The language of honour gets a double edge. "Crown'd with princes' honours, poets' lays" pairs political power with poetry, and since a "lay" is a short poem or song, Pope's own epitaph quietly counts itself among the tributes. Then there is "brave thirst of praise". "Thirst" is a bodily craving and could sound faintly greedy, but "brave" and "Due to his merit" turn it into a noble ambition. Pope is saying that wanting fame is respectable when you have earned it.
The final couplet stands apart, a sting in the tail after six lines of sustained praise. Its grammar is a mirror: "Living... fear'd" against "dying, fears". The same emotion survives, but the situation flips from rivalry to dread. Nature is made into a character, proud, anxious and almost human, and the rhyme of "outvie" with "die" ties the competition to its end. It is striking that a poem about escaping death should finish on the word "die". Yet the word belongs to Nature, not to Kneller. His pictures, the poem implies, were what had been snatched from Fate, and the dying one is the original, not the copy.
That reversal is why the poem lasts. It shows how much the heroic couplet can do in very little space, with praise, wit and a paradox packed into eight lines. It also does for Kneller what he did for his sitters, by keeping him in memory against the pull of time.