Abraham Lincoln, the revered 16th President of the United States, articulated a profound truth during a period of immense national division. His powerful assertion, penned in a letter to Henry L. Pierce and others in April 1859, came just two years before the outbreak of the Civil War. At a time when the institution of slavery was tearing the nation apart, Lincoln, while strategically working to preserve the Union, personally regarded slavery as a moral abomination. This statement reflected his deep-seated belief that the denial of basic human liberty was fundamentally unjust and contrary to divine principles.

The deeper meaning of Lincoln's words resonates with the core principle of universal human rights. It exposes the inherent hypocrisy of individuals or groups who champion their own freedom while simultaneously stripping it from others. Lincoln believed that true liberty is interdependent; one cannot genuinely possess or fully enjoy freedom if they are actively engaged in suppressing the freedom of another. This idea aligns with the age-old ethical axiom of treating others as one wishes to be treated, highlighting the shared human yearning for self-determination and happiness (Review).

Historically, this sentiment was a direct challenge to the proponents of slavery, who sought to justify the enslavement of African Americans. Lincoln viewed such practices as a "monstrous injustice" that undermined the very ideals upon which the American republic was founded, particularly the Declaration of Independence's assertion that all men are created equal. The quote's relevance extends far beyond the American Civil War, serving as a timeless reminder that oppression, in any form, is unsustainable. Throughout history, those who deny freedom to others have often found that their own liberty, or power, cannot long endure under the weight of such injustice, as people invariably rise up against tyranny.