Letter 108 — On the Approaches to Philosophy (§25)

“He who considers these lines in the spirit of a philosopher comments on the words in their proper sense: “Vergil never says, ‘Time goes,’ but ‘Time flies,’ because the latter is the quickest kind of movement, and in every case our best days are the first to be snatched away; why, then, do we hesitate to bestir ourselves so that we may be able to keep pace with this swiftest of all swift things?” The good flies past and the bad takes its place.”