That things do not last is not a difficult observation. What's interesting is that traditions with no contact between them all treated it as fundamental, and reached quite different conclusions about what follows.
The Buddhist formulation
The most systematic. Impermanence is one of three characteristics said to mark all conditioned phenomena, alongside unsatisfactoriness and the absence of a fixed self.
The argument is causal. Suffering arises from craving; craving arises from the mistaken belief that impermanent things can provide lasting satisfaction. Seeing impermanence clearly undermines the craving.
The analysis extends further than most traditions take it. Not only do objects and circumstances change, but the self that observes them is analysed as a process rather than a thing — a sequence of arising and passing phenomena with no persisting core.
That's a considerably stronger claim than the observation that things end, and it's where the tradition's philosophical work concentrates.
The Greek versions
Heraclitus is remembered for the doctrine of flux — the image of not stepping into the same river twice, and the claim that change is the fundamental character of things.
Against this, Parmenides argued that change is illusory and that what genuinely is must be unchanging, on the grounds that becoming would require something to come from nothing.
That opposition set an agenda. Plato's response involved distinguishing the changing world of appearance from unchanging forms grasped by reason — a move that located reality in the permanent and treated the impermanent as a lesser order.
Which is close to the opposite of the Buddhist conclusion. Both start from the observation of change; one treats impermanence as the truth to be accepted, the other as evidence that reality lies elsewhere.
The Stoic use
Practical rather than metaphysical. The Stoics used contemplation of impermanence as an exercise.
Deliberately recalling that possessions, relationships and life itself are temporary, in order to reduce attachment and increase appreciation.
Marcus Aurelius returns to this repeatedly — noting how quickly people are forgotten, how brief a life is against the age of the world, how everything present will shortly not be.
The intended effect is not despair but proportion. If it all ends, then present anxieties are smaller than they feel.
The Abrahamic treatments
Impermanence appears with a different emphasis.
Ecclesiastes is the clearest example — an extended meditation on the futility of human effort against the passage of time, with a repeated refrain about the transience of everything undertaken.
The conclusion drawn differs from the Buddhist one. Rather than treating attachment as the problem, the text generally points towards accepting the limits of understanding and finding meaning in ordinary work and relationships within a life one didn't choose the terms of.
Elsewhere in these traditions, human impermanence is contrasted with divine permanence — the transience of created things set against an eternal creator. Which relocates permanence rather than abandoning it.
The Chinese contribution
Daoist thought treats change as the fundamental process, with the emphasis on aligning with it rather than resisting.
The imagery is characteristically natural — water, which yields and prevails, seasons that turn, cycles that complete. The recommended posture is accommodation rather than either acceptance of suffering or transcendence.
The Book of Changes formalises this as a system for understanding situations as configurations of forces in transition, where the question is always what a situation is turning into rather than what it is.
What the convergence suggests
The observation is available to anyone who pays attention, which explains the independent arrival.
What's more interesting is that the conclusions diverge so completely. Impermanence as the truth to be realised, as evidence of a truer permanent realm, as a spur to proportion, as a call to accommodation, as the condition of a life given rather than chosen.
Which indicates that the observation underdetermines the response. Noticing that things change tells you very little about how to live, and the traditions supply the rest.
The contemporary version
Impermanence circulates now largely in a therapeutic register — as a technique for reducing attachment and increasing appreciation, detached from any of the metaphysical positions.
That's a legitimate use of a genuine insight, and it's worth noticing which version you've received.
The instruction to remember that things pass, offered as a way of feeling better about difficulty, is doing something different from a philosophical claim about the nature of what exists.
Both are available. Confusing them produces a shallow version of the second and an unnecessarily heavy version of the first.
The aesthetic version
One further treatment worth mentioning because it converts the observation into a positive rather than a problem.
Japanese aesthetic traditions developed a set of concepts in which transience is itself the source of beauty — the appreciation of things precisely because they will not last, and of imperfection and incompleteness as qualities rather than defects.
The cherry blossom is the standard example, valued substantially because its flowering is brief. A permanent version would be a lesser thing.
That is a genuinely different move from either accepting impermanence or transcending it. It treats the temporary nature of things as what makes them worth attending to, which reframes the whole question rather than answering it.