The concept of "chain" includes both a unit of length and a rich metaphor in literature. Historically, the chain—defined as 66 feet or 20.1168 meters—functioned as a fundamental measure in surveying and land division, shaping systems from the U.S. Public Land Survey to British railways. However, in literature, writers have reimagined this physical object as a symbol of limitation, continuity, or connection.
Charles Dickens illustrates fate’s unbreakable hold with the phrase “a chain forged in the moment of that small conclusion,” while William James clearly states, “A chain is no stronger than its weakest link, and life is after all a chain.” Likewise, Charles Howard Hinton meditates on an “endless chain of movement,” pondering perpetual causality. These diverse portrayals highlight the chain’s dual nature as both a concrete measure and a symbol of human experience, linking the tangible with the abstract.