Here are some examples that may be helpful when looking for visualization angles.
Wordle text cloud:
More complex Wordle analysis tool:
Faust text according to word frequency:
Stefanie Posavec: On The Map.
Many quantitative visualizations of Jack Kerouac’s On The Road:
Romeo and Juliet as network:
These nodes as text file:
Most used words per character:
The Bible visualized in 10 different ways:
Text of Alice in Wonderland as emoji:
A Visual Survey of Text Visualization Techniques
[Mostly academic articles]
A count of the exchanged lines can also reveal a lot