The quote "My hours are married to shadow" from Sylvia Plath's "The Colossus and Other Poems" reflects a deep sense of entrapment and introspection. Plath uses the imagery of marriage to signify a close, perhaps even suffocating relationship between time and darkness. This could symbolize her struggle with mental illness, where her experiences and hours are intertwined with feelings of despair and gloom.

By personifying hours as being married to shadows, Plath expresses a poignant connection to the darker aspects of time, suggesting that her existence is dominated by these themes. Her poetry often explores the complexities of identity and emotional turmoil, making this line a powerful representation of her inner battles and the weight of her experiences.