Chapter 2, Footnote #13
Difficulty of defining `right'
The difficulty of defining ``a right'' is increased by the fact that while we recognise in ordinary discourse that there are moral as well as legal rights, and that the two kinds of rights are not always coincident, we still frequently speak of ``rights'' without clearly distinguishing which of the two we mean. At present I am concerned with legal rights; but the definition that I propose to give may easily be applied, mutatis mutandis, to moral rights.