What is the theme of this poem?

The theme of William Wordsworth's poem "The World Is Too
Much With Us" is one of vision. What is meant by this is the theme refers to how one
regards the world around them when their vision is
obscured.

The first time the theme is seen is in the third
line: "Little we see in Nature that is ours." Here, the theme is initially defined. When
"we," society, look around, we fail to recognize anything in nature that we can claim.
While Wordsworth does not see this as a problem, per say, he does recognize the fact
that "we" are competing with things around us.

Later in
lines twelve and thirteen, Wordsworth again brings up
sight:

Have
glimpses that would make me less forlorn;

Have sight of
Proteus rising from the
sea.

Here, Wordsworth wishes
that he could see Protus (a sea-god) rising from the sea. This "sight" has a double
meaning. First, the literal: Wordsworth wishes to see the god rising from the sea.
Second, and a more figurative interpretation, Wordsworth wishes to be able to see Nature
as Proteus does.

In the end, Wordsworth is illuminating the
importance of vision, or sight. To exist in the world properly, one must be able to
really see things for what they are. Wordsworth does not want "us" to only
look.