What challenges does utilitarianism pose to other moral thinkers

This paper should be 8 to 9 pages long (at least 8 pages).
Standard style: double-spaced, 12-point font, one-inch margin all around.
The topic must connect at least three authors that we covered this semester.
There must be a section devoted to the evaluation of the ideas you wish to discuss. Simple expositions will not be considered adequate for the final paper.
You must cite proper primary sources. Secondary sources are optional. Please remain consistent in your style of citation.
Structural recommendation:

Use the first paragraph to describe the problem or issue that you wish to address in this paper, and finish by clearly and distinctly stating your thesis.
Use the body of the essay to argue for your thesis. You should cite primary texts to demonstrate your thesis.
Use the last paragraph to quickly summarize your argument and conclude your paper.
Sample topics:

Every author covered in this semester talks about moral virtues. Contrast their views, explain the reasons behind their agreement/disagreement, and present and support your own argument.
Every author covered in this semester talks about human happiness. Contrast their views, explain the reasons behind their agreement/disagreement, and present and support your own argument.
To what degree are humans free? And what do we mean by freedom when we talk about different scenarios?
Do you think the state of nature is a reasonable assumption? Why or why not?
What challenges does utilitarianism pose to other moral thinkers we encountered this semester? Do you think utilitarianism is as powerful as Mill (and others) think? Why or why not?
Do human persons share a similar nature? If so, why do we disagree with one another on so many different issues? If not, how can we coherently consider the concept of the human person?

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