It seems like you are referencing lines from Edgar Allan Poe's poem "The Raven." The lines you've quoted are well-known and evoke themes of longing, despair, and the supernatural. If you are looking for analysis or commentary on these lines, they suggest a deep sense of hopelessness as the speaker reflects on a shadow—potentially representing his sorrow or loss—indicating that he feels trapped and that his soul will not be freed from this despair.
If you need further assistance with interpretation, analysis, or context about these lines, please let me know!