Yeats and Geometry

      Spelman College Professor Emeritus Colm Mulcahy is a mathematician and scholar whose talents and interests reach far and wide.  An email from him alerted me to a website exploring the work of his fellow Irishman, poet William Butler Yeats (1865-1939).  In particular Mulcahy alerted me to links between Yeats' poetry and Geometry.

     And these new connections to Yeats led me to think back to college days, to my reading of Yeats in a course in "Modern Poetry"  -- and to remember the way that my thoughts were swept into the air by "The Wild Swans at Coole."  I offer below its opening stanzas, followed by a link to the rest of the poem.

     The Wild Swans at Coole      by William Butler Yeats

      The trees are in their autumn beauty,
      The woodland paths are dry,
      Under the October twilight the water
      Mirrors a still sky;
      Upon the brimming water among the stones
      Are nine-and-fifty swans.

      The nineteenth autumn has come upon me
      Since I first made my count;
      I saw, before I had well finished,
      All suddenly mount
      And scatter wheeling in great broken rings
      Upon their clamorous wings.

       . . .                            Yeats' complete poem is available here at PoetryFoundation.org.