The poem is a contribution to one of Stevens's major themes, the relationship between imagination and reality.

I believe in a balance between real life and imagination.

But when I was a kid, 1 didn't have strong enough boundaries between imagination and reality.

Even the lines between perception, imagination and memory become blurred.

The poem shows the struggle between imagination and science.

His stories are often about differences between realities and imagination.

How did one locate the separating line between imagination and reality?

His poetry is a complex exploration of the relationship between imagination and reality.

Even in work supposedly drawn from life, however, the line between realism and imagination is often blurred.

Another time she might've done a study on the harmony and power that could result in a working relationship between human imagination and nature.