Build out its piers: The beams of light are like the piers or by James Russell Lowell

Lowell compares beams of light to piers or jetties—structures that extend from the shoreline into the water. The idea is that light, similar to a pier, reaches out into a challenging environment, offering protection or a safe way through.

Both meanings are genuinely present in the image and serve distinct purposes. Harbour piers shield against waves, while bridge piers support arches and withstand currents. Lowell is candid about the metaphor's dual role, encouraging the reader to keep both images in mind instead of reducing it to just one.

It symbolizes any overpowering, destructive force—something that relentlessly attacks and erodes. In a lighter metaphor, it might represent darkness, ignorance, chaos, or just the unyielding pressure of nature on human creations.

As presented here, it comes across as a prose annotation—essentially, the author's commentary on a line or image from a larger poem. Lowell often added these notes to assist readers in navigating dense or unconventional imagery.

It means they withstand constant lateral pressure without breaking. When applied to light, this indicates that the beams are neither fragile nor temporary—they maintain their position despite any opposing forces.

It’s calm and precise. Lowell isn't trying to impress you; he’s sharing his thought process with the patience of someone who truly wants you to understand why he chose the word 'piers.'

Lowell was recognized for his moral seriousness and meticulous craftsmanship. This note reflects both qualities: he takes the time to fully explain the image, showing his care, and he’s honest enough to acknowledge that it holds multiple meanings instead of claiming there’s only one 'correct' interpretation.