Marcus Aurelius
Meditations 10.34
To him who is penetrated by true principles even the briefest precept is sufficient, and any common precept, to remind him that he should be free from grief and fear. For example:—
"Leaves, some the wind scatters on the ground— So is the race of men."
Leaves, also, are thy children; and leaves, too, are they who cry out as if they were worthy of credit and bestow their praise, or on the contrary curse, or secretly blame and sneer; and leaves, in like manner, are those who shall receive and transmit a man's fame to after-times. For all such things as these "are produced in the season of spring," as the poet says; then the wind casts them down; then the forest produces other leaves in their places. But a brief existence is common to all things, and yet thou avoidest and pursuest all things as if they would be eternal. A little time, and thou shalt close thy eyes; and him who has attended thee to thy grave another soon will lament.
Marcus Aurelius, Meditations 10.34, translated by George Long
Even an obvious and quite brief aphorism can serve to warn him that is bitten with the true doctrines against giving way to grief and fear; as for instance,
Such are the races of men as the leaves that the wind scatters earthwards.
And thy children too are little leaves. Leaves also they who make an outcry as if they ought to be listened to, and scatter their praises or, contrariwise, their curses, or blame and scoff in secret. Leaves too they that are to hand down our after-fame. For all these things
Burgeon again with the season of spring;
anon the wind hath cast them down, and the forest puts forth others in their stead. Transitoriness is the common lot of all things, yet there is none of these that thou huntest not after or shunnest, as though it were everlasting. A little while and thou shalt close thine eyes; aye, and for him that bore thee to the grave shall another presently raise the dirge.
Marcus Aurelius, Meditations 10.34, translated by C. R. Haines