Epictetus

“ When he passed this place on his way back from exile, I recall what a tale he told as he inveighed against his former life and announced for the future that, when he had returned to Rome, he would devote himself solely to spending the remainder of his life in peace and quiet, "For how little is yet left to me!"—And I told him, "You will not do it, but when once you have caught no more than a whiff of Rome you will forget all this." ”

“ Before he reached Rome, letters from Caesar met him; and as soon as he received them, he forgot all those resolutions of his, and ever since he has been piling up one property after another. I wish I could stand by his side now and remind him of the words that he uttered as he passed by here, and remark, "How much more clever a prophet I am than you!"
What then? Do I say that man is an animal made for inactivity? [2] Far be it from me! But how can you say that we philosophers are not active in affairs? ”

“ If we philosophers had applied ourselves to our own work as zealously as the old men at Rome have applied themselves to the matters on which they have set their hearts, perhaps we too should be accomplishing something. I know a man older than myself who is now in charge of the grain supply [1] at Rome. ”