I know that things can’t stay the same, that change is the whole of the law: but that not just the human world but the earth and the weather and life itself could be different at the end of a single lifetime from how it was at the beginning . . . you feel that the world, the earth, can die along with you. Can it? How can I believe that all around me is ruination unless I believe it was once as it should be, and I was alive then to see it? And how am I to know that this is so?

This is a changing world. It changes from day to day, year to year, and from age to age. Rivers deepen their gorges as they carry more land to the sea. Mountains rise, only to be leveled gradually by winds and rain. Continents rise and sink into the sea. Such are the gradual changes of the physical earth as days add into years and years combine to become ages.

Everything is in constant flux on this earth. Nothing keeps the same unchanging shape, and our affections, being attached to things outside us, necessarily change and pass away as they do. Always out ahead of us or lagging behind, they recall a past which is gone or anticipate a future which may never come into being; there is nothing solid there for the heart to attach itself to. Thus our earthly joys are almost without exception the creatures of a moment...

Change is the very fabric of our time.

Todo en la tierra está en un continuo flujo: nada conserva una forma constante y quieta, y los afectos nuestros, que se vinculan a las cosas exteriores, pasan y cambian necesariamente como ellas. Siempre delante o detrás de nosotros, recuerdan el pasado que ya no es o previenen el porvenir que por lo común no será: no hay ahí nada sólido a lo que el corazón pueda agarrarse.

Nothing remains the same from one moment to the next, you can’t step into the same river twice. Life – evolution – the whole universe of space/time, matter/energy – existence itself – is essentially change.

The years pass in their hundreds and their thousands, and what does any man see of life but a few summers, a few winters? We look at mountains and call them eternal, and so they seem... but in the course of time, mountains rise and fall, rivers change their courses, stars fall from the sky, and great cities sink beneath the sea. Even gods die, we think. Everything changes.

The universe itself is change and life itself is but what you deem it

That nothing is static or fixed, that all is fleeting and impermanent, is the first mark of existence. It is the ordinary state of affairs. Everything is in process. Everything — every tree, every blade of grass, all the animals, insects, human beings, buildings, the animate and the inanimate — is always changing, moment to moment. We don’t have to be mystics or physicists to know this. Yet at the level of personal experience, we resist this basic fact. It means that life isn’t always going to go our way. It means there’s loss as well as gain.

Nothing is absolute. Everything changes, everything moves, everything revolves, everything flies and goes away.

There is nothing constant in the universe. All ebb and flow, and every shape that's born, bears in its womb the seeds of change.

Men come and go, cities rise and fall, whole civilizations appear and disappear — the earth remains, slightly modified. The earth remains, and the heartbreaking beauty where there are no hearts to break.

Everything is change; and you cannot step twice into the same river.

The lapse of ages changes all things - time - language - the earth - the bounds of the sea - the stars of the sky, and everything 'about, around, and underneath' man, except man himself, who has always been and always will be, an unlucky rascal. The infinite variety of lives conduct but to death, and the infinity of wishes lead but to disappointment. All the discoveries which have yet been made have multiplied little but existence.