The most profound answer to the question is (in my humble opinion): Does it matter? The scholarly detective work is interesting, to a point, but I believe that time is better spent studying the plays and poetry. The truth is, there are certain types of people
who want their names attached...
Shakespeare is important for the following reasons: (Not in order of importance.)
He wrote beautifully. Some painters have a talent for using colors uniquely, and create beautiful paintings. Shakespeare created beautiful works of art with his unique use of the English language.
McKenzie nailed it.
Take the simplest letter:
How are you? I am fine. I went to the movies with Dave...
The speaker is the "I," sharing their point of view. First person.
"He went to the movies and then he felt sick," is third person.
In seven words: To pursue the American Dream is suicidal. (And don't forget what Ron and Jennifer said!)
I agree with Richard, "Catch 22" is a great book, but... If you want something shorter read Jonathan Swift's"A Modest Proposal." One of the most famous satires ever written in the English language. In it Swift proposes that the British eat Irish babies as
an added food source...
How about this: Atticus Finch is a model citizen, and model lawyer, in all his action he models the virtuous life to his children. (Phew!)
You could explore:
Is he naturally a moral man, or does he act for his children?
What kind of citizen do we need in our democracy...