The rest to some faint meaning make pretence, But Shadwell never deviates into sense. Some beams of wit on other souls may fall, Strike through and make a lucid interval; But Shadwell's genuine night admits no ray, His rising fogs prevail upon the day.

-Dryden,John
  MacFlecknoe (published1682), l.19^24.

I know noble accents And lucid, inescapable rhythms; But I know, too, That the blackbird is involved In what I know.

-Stevens,Wallace
  Harmonium,'ThirteenWays of Looking At A Blackbird', pt.8.