I have been one acquainted with the night.
I have walked out in rain—and back in rain.
I have outwalked the furthest city light.
I have looked down the saddest city lane.
I have passed by the watchman on his beat
And dropped my eyes, unwilling to explain.
The narrator has walked so far that he has walked out of the city or is at the very edge of the city. The distance he puts between himself and the people in the city refers to the emotional distance felt and also is a symptom of the narrator’s depression. However since the narrator chose to walk the distance, he chose to isolate himself from everyone else. A reason for this choice is because no one understands what he is going through, as he continues to go on nightly walks alone. 
 Good mood music for this poem: “Spanish Sahara” by the Foals. The image of the narrator walking a long distance away from something occurs in the video, and the isolated and depressed tone of the song resonates with the poem. 

Acquainted with the Night