'Twas brillig, and the slithy toves Did gyre and gimble in the wabe; All mimsy were the borogoves, And the mome raths outgrabe. 'Beware the Jabberwock, my son! The jaws that bite, the claws that catch! Beware the Jubjub bird, and shun The frumious Bandersnatch!'

-Dodgson
Through the Looking-Glass, ch.1,'Looking-Glass House'.

Turning and turning in the widening gyre The falcon cannot hear the falconer; Things fall apart; the centre cannot hold; Mere anarchy is loosed upon the world, The blood-dimmed tide is loosed, and everywhere The ceremony of innocence is drowned; The best lack all conviction, while the worst Are full of passionate intensity. SeeAchebe 2:18.

-Yeats,W(illiam) B(utler)
  'The Second Coming', l.1^8. Collected in Michael Robartes and the Dancer (1921).