What does Angelou mean that "Uncle Willie was a study in contrasts"?

And thank you

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.

How is the speaker's writing assignment in "theme for english b" affected by his setting in place and time? the speaker focuses more on his fascination with music than on the core of the assignment. the speaker reflects that he has nothing in common with his instructor, who will therefore not understand his essay. the speaker has trouble with the assignment because he questions what is true about his own identity.< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ,,

How did the language of the gettysburg address differ from the language in the secondary source about this speech?