. . . as mathematics, a human invention
  That parallels but never touches reality, gives the astronomer   Metaphors through which he may comprehend
  The powers and the flow of things: So the human sense
  Of beauty is our metaphor of their excellence, their divine
          nature: --- like dust in a whirlwind, making
  The wind visible.

---ROBINSON JEFFERS

 

[Photograph: Phillip Hyde from Not Man Apart]