Meditations 9.28

The periodic movements of the universe are the same, up and down from age to age. And either the universal intelligence puts itself in motion for every separate effect, and if this is so, be thou content with that which is the result of its activity; or it puts itself in motion once, and everything else comes by way of sequence in a manner; or indivisible elements are the origin of all things.—In a word, if there is a god, all is well; and if chance rules, do not thou also be governed by it.

Soon will the earth cover us all: then the earth, too, will change, and the things also which result from change will continue to change forever, and these again forever. For if a man reflects on the changes and transformations which follow one another like wave after wave and their rapidity, he will despise everything which is perishable.

Marcus Aurelius, Meditations 9.28, translated by George Long

The same, upwards, downwards, from cycle to cycle are the revolutions of the Universe. And either the Universal Mind feels an impulse to act in each separate case—and if this be so, accept its impulsion—or it felt this impulse once for all, and all subsequent things follow by way of consequence; and what matters which it be, for if you like to put it so the world is all atoms [or indivisible]. But as to the Whole, if God—all is well; if haphazard—be not thou also haphazard.

Presently the earth will cover us all. It too will anon be changed, and the resulting product will go on from change to change, and so for ever and ever. When a man thinks of these successive waves of change and transformation, and their rapidity, he will hold every mortal thing in scorn.

Marcus Aurelius, Meditations 9.28, translated by C. R. Haines