If you are looking for the full text files to watch the film, you can find them on major subtitle repositories:
Freder's realization: "It means: Go below!... Into the depths!". Where to Find Full Subtitles
In the 1927 silent film Metropolis , the "deep paper" likely refers to the found in the pockets of workers, containing mysterious hand-drawn diagrams or maps of the underground catacombs. Context of the Scene Metropolis subtitles English
Wikipedia's TimedText for Metropolis : Provides a line-by-line breakdown of the English intertitles.
💡 : The 2010 "Complete Metropolis" version is the most accurate, as it restored nearly 25 minutes of lost footage discovered in Argentina. srt file for a particular version of the movie? English subtitles for clip: File:Metropolis (1927).webm If you are looking for the full text
: These "papers" reveal the growing unrest and organization among the working class, leading Fredersen to hire the "Thin Man" to spy on his son, Freder. English Subtitles & Intertitles
"As deep beneath the earth as the city of the workers lay, so high above it towered the... 'sons' club'". Context of the Scene Wikipedia's TimedText for Metropolis
Since Metropolis is a silent film, "subtitles" usually refer to the (the text cards between scenes). Key Dialogue related to "Deep" : "Deep beneath the earth lay the city of the workers".