Power looks impressive from far away, but the poem suggests it can't last forever. The tower is the center of the poem. It stands tall in the clouds, close to the sun, with birds drifting past. At first it seems grand and untouchable. Below it, though, are people who bow, and the speaker is quick to say they are full of life but tired of lies.
The tower stands for some kind of authority, and its promises of "goodness and wealth" sound hollow. The glass window image is clever: a tower that should be solid and mysterious turns out to be see-through, so everyone can spot the deception. The speaker sides with the people. The tone shifts from calm, almost majestic description to quiet determination, with short lines near the end that feel like a crowd gathering strength. The mood is tense and hopeful at once. Nothing has fallen yet, but the poem leaves us sensing that the change is coming.