text: in the following sense: "We must wake up; unless we hasten, we shall be left behind. Time rolls swiftly ahead, and rolls us with it. We are hurried along ignorant of our destiny; we arrange all our plans for the future, and on the edge of a precipice are at our ease." Instead of this, he brings to our attention how often Vergil, in speaking of the rapidity of time, uses the word "flies" (fugit).