The Warning by Henry Wadsworth Longfellow

Longfellow warns that American slavery poses a threat to the very existence of the United States. Drawing from the story of Samson, he suggests that when a group of people endures oppression for too long, they will inevitably rise up. The consequences of such a rebellion could lead to the downfall of the oppressors and the destruction of vital aspects of the nation, including its democratic institutions.

He symbolizes the enslaved Black population of the antebellum United States. Longfellow makes this comparison clear in the third stanza: "There is a poor, blind Samson in this land, / Shorn of his strength and bound in bonds of steel." The blindness and chains reflect the physical and legal realities faced by enslaved people.

The Samson story was well-known to Longfellow's Protestant American audience, so the parallel resonated emotionally without any need for explanation. This approach allowed him to present the warning as a historical certainty instead of a political viewpoint — he isn’t outright saying slavery is wrong (though he hints at it), but rather that it is dangerous, which was a more convincing argument for readers who might push back against a moral lecture.

Firmly anti-slavery, Longfellow wrote this poem for his 1842 collection Poems on Slavery, which stood out as a significant abolitionist literary work of its time. The poem expresses complete sympathy for the enslaved; Samson is portrayed as noble, wronged, and pushed to desperation by cruelty, whereas it is his oppressors who bring about the disaster.

"Commonweal" is an old English term that refers to the common good or the body politic — in other words, the shared welfare of the nation and its people. Longfellow uses it to refer to the American republic. When he mentions that Samson might "shake the pillars of this Commonweal," he’s talking about the foundations of the United States as a political and social system.

It is incomplete—the final two lines don't have a proper main verb, leaving the sentence hanging. This is likely intentional. The disaster Longfellow describes hasn't occurred yet; it's a future possibility, a threat looming ahead. The unfinished grammar captures that feeling of something unresolved, still on the way, not yet concluded.

Longfellow is most recognized today for narrative poems like The Song of Hiawatha and Paul Revere's Ride — pieces that lean towards the patriotic and sentimental. However, Poems on Slavery reveals a more politically charged aspect of his writing that often gets overshadowed. Some of his contemporaries believed the collection was too cautious compared to more radical abolitionists like Frederick Douglass, while others considered it dangerously provocative. This work creates an intriguing contrast with his reputation as a gentle, national poet.

Not in a specific sense, but looking back, it feels surprisingly insightful. Written in 1842, almost two decades before the war started, it claims that slavery will ultimately lead to a devastating breakdown of the American political system. The Civil War resulted in over 600,000 deaths and nearly tore the republic apart — precisely the kind of consequence Longfellow was cautioning against.