Which Rights Should Be Universal?

We hold these truths to be self-evident... So begins the U.S. Declaration of Independence. What follows those words is a ringing endorsement of universal rights, but it is far from self-evident. Why did the authors claim that it was? William Talbott suggests that they were trapped by a presupposition of Enlightenment philosophy: That there was only one way to rationally justify universal truths, by proving them from self-evident premises.