Dickinson uses architectural and measurement language to diagnose a psychological problem. The poem's central metaphor treats human potential as a vertical dimension—"how high we are," "statures touch the skies"—that we actively prevent ourselves from measuring accurately.
The key move happens in line 7: "ourselves the cubits warp." A cubit is an ancient measurement (elbow to fingertip, roughly 18 inches), used throughout the Bible to specify dimensions of temples and arks. By choosing this archaic, sacred unit, Dickinson links self-measurement to biblical architecture. But notice the verb: we warp the measuring tool itself. We don't shrink or fail to grow—we bend the ruler so we can't know our true height.
"For fear to be a king" explains the motive. This isn't about lacking ability; it's about refusing sovereignty. In Dickinson's New England Protestantism, every individual had direct access to God—a kind of spiritual kingship. The poem suggests we sabotage this potential because responsibility terrifies us more than failure does. The heroism "we recite" stays theoretical, kept safely in stories, because actualizing it would mean accepting power we'd rather avoid.