Negative: I would try to elaborate more in your thesis. It is kind of confusing what you are going to be talking about
Positive: I think this is a great example of Friere that relates to your topic nicely. It fits with the Percy quote you used above it. I would try to say more about it though afterwards.
Use of Percy: This is a good use of Percy in your essay and your understanding of it is good as well. It adds to your essay.