From “Night Thoughts,” Night VI.
AS in a wheel, all sinks, to reascend:
Emblems of man, who passes, not expires.
  With this minute distinction, emblems just,
Nature revolves, but man advances; both
Eternal, that a circle, this a line.
That gravitates, this soars. Th’ aspiring soul,
Ardent, and tremulous, like flame, ascends,
Zeal...