Classic Poem

This is not exactly what I mean
Any more than the sun is the sun.
But how to mean more closely
If the sun shines but approximately?
What a world of awkwardness!
What hostile implements of sense!
Perhaps this is as close a meaning
As perhaps becomes such knowing.
Else I think the world and I
Must live together as strangers and die—
A sour love, each doubtful whether
Was ever a thing to love the other.
No, better for both to be nearly sure
Each of each—exactly where
Exactly I and exactly the world
Fail to meet by a moment, and a word.