Today, I got an idea, Why not show text sentiments value from different author in just one-shot all together? So I write a few lines of code in Mathematica 11.3, see attached Notebook.
The idea is very nature. As people said, every color represents an emotion, and vice versa. So I use "warm" red to represent positive, "cool" blue for negative, and green for neutral. Let's start an example from Alice.
sentence = TextSentences[ExampleData[{"Text", "AliceInWonderland"}]];
sentiment = Classify["Sentiment", #, "Probabilities"] & /@ sentence;
width = Floor[N[Sqrt[Length@sentiment]], 1];
plot = ArrayPlot[
Partition[Take[RGBColor @@@ sentiment, width^2], width],
ImageSize -> 300, PlotLabel -> "Alice in Wonderland"]
Then I got all texts plot in various color. 
Result Discussion:**
Typical "Neutral" sentiments: "Origin of Species","Declaration of Independence" 
Typical "Positive + Negative" (maybe more dramatic) sentiments: Shakespeares "Hamlet" ,"Sonnets" 
Non-English Text: Sentiments classify may not be very accurate. 
Take a glance, if the text-color match the color in your mind?
Attachments:
