Thirteen Ways of Looking at a Blackbird

One of my favorite poems-Thirteen Ways of Looking at a Blackbird by Wallace Stevens. A few lines:
I
Among the twenty snowy mountains,
The only moving thing
Was the eye of a blackbird.

V
I don't know which to prefer
The beauty of inflections
Or the beauty of innuendoes,
The blackbird whistling
Or just after.

VIII
I know noble accents
And lucid inescapable rhythms;
But I know, too,
That the blackbird is involved
In what I know.
IX
When the blackbird flew out of sight,
It marked the edge
Of one of many circles.