Cum dignitate otium - Cicero

Likewise other things, which seem to some to be worthy of admiration, are by many thought to be of no value at all. But concerning friendship, all, to a man, think the same thing: those who have devoted themselves to public life; those who find their joy in science and philosophy; those who manage their own business free from public cares; and, finally, those who are wholly given up to sensual pleasures — all believe that without friendship life is no life at all, or at least they so believe if they have any desire whatever to live the life of free men.

For to those who have not the means within themselves of a virtuous and happy life every age is burdensome; and, on the other hand, to those who seek all good from themselves nothing can seem evil that the laws of nature inevitably impose. To this class old age especially belongs, which all men wish to attain and yet reproach when attained; such is the inconsistency and perversity of Folly! They say that it stole upon them faster than they had expected. In the first place, who has forced them to form a mistaken judgement? For how much more rapidly does old age steal upon youth than youth upon childhood? And again, how much less burdensome would old age be to them if they were in their eight hundredth rather than in their eightieth year? In fact, no lapse of time, however long, once it had slipped away, could solace or soothe a foolish old age.

Rashness is truly the fruit of youth, but wisdom of old age.