Some things are hurrying into existence, and others are hurrying out of it; and of that which is coming into existence part is already extinguished.
Motions and changes are continually renewing the world, just as the uninterrupted course of time is always renewing the infinite duration of ages.
In this flowing stream then, on which there is no abiding, what is there of the things which hurry by on which a man would set a high price?
It would be just as if a man should fall in love with one of the sparrows which fly by, but it has already passed out of sight. Something of this kind is the very life of every man, like the exhalation of the blood and the respiration of the air.
For such as it is to have once drawn in the air and to have given it back, which we do every moment, just the same is it with the whole respiratory power, which thou didst receive at thy birth yesterday and the day before, to give it back to the element from which thou didst first draw it.
Neither is transpiration, as in plants, a thing to be valued, nor respiration, as in domesticated animals and wild beasts, nor the receiving of impressions by the appearances of things, nor being moved by desires as puppets by strings, nor assembling in herds, nor being nourished by food; for this is just like the act of separating and parting with the useless part of our food.
What then is worth being valued? To be received with clapping of hands? No. Neither must we value the clapping of tongues, for the praise which comes from the many is a clapping of tongues.
Suppose then that thou hast given up this worthless thing called fame, what remains that is worth valuing? This in my opinion, to move thyself and to restrain thyself in conformity to thy proper constitution, to which end both all employments and arts lead.