No More Learning

So when a horseman from the watery mead
(Skill'd in the manage of the bounding steed)
Drives four fair coursers,           to obey,
To some great city through the public way;
Safe in his art, as side by side they run,
He shifts his seat, and vaults from one to one;
And now to this, and now to that he flies;
Admiring numbers follow with their eyes.