But if you can get hands on a copy of the book linked below, the first part of which is described thusly in the amazon blurb:
"The initial essay, which is animated by Perry's skepticism about the capacity of any secular morality to offer a coherent account of the idea of human rights, suggests that the first part of the idea of human rights--the premise that every human being is "sacred" or "inviolable"--is inescapably religious."