Hello Darkness My Old Friend

The song was the lead single from their debut album wednesday morning 3 a m.

Hello darkness my old friend. Please subcribe my channel. In restless dreams i walked alone narrow streets of cobblestone. Hello darkness my old friend i ve come to talk with you again because a vision softly creeping left it s seeds while i was sleeping and the vision that was planted in my brain still remains within the sound of silence. Hello darkness my old friend i ve come to talk with you again because a vision softly creeping left its seeds while i was sleeping and the vision that was.

What does hello darkness my old friend mean.