Produced, when thoughtless Folly hath usurped
The natural crown that[536] sage Experience wears.
Gay, volatile, ingenious, quick to learn,
And prompt to exhibit all that he possessed
Or could perform; a zealous actor, hired
Into the troop of mirth, a soldier, sworn
Into the lists of giddy enterprise—
Such was he;[HI] yet, as if within his frame
Two several souls alternately had lodged,
Two sets of manners could the Youth put on;