Take a man. Remove him from all historic and social context. Take him as a lone, autonomous individual. What rights does he have?
A liberal--either a left-liberal or one of those right-liberals we erroneously call "conservatives"--would probably be able to produce a short, or even a long, list. Certainly the left-liberal list and the right-liberal list would differ somewhat in content and emphasis, but either kind of liberal would be able to produce a list. Both lists would be wrong.
The correct answer is "none." A man possesses no rights when he is removed from all historic and social context. If such a thing as a lone, autonomous individual existed, he would exist without any rights whatsoever.
It is a good thing, then, that there is no such thing as a lone, autonomous individual. Man, as a bodily and incarnate being, always exists within a historic and social context. And it is only within this historic and social context that the concept of "rights" has any meaning at all.
A "right" is not a quality. Rights exist as complements to duties. Both only exist as relations within the context of relationships. A relation is a reference to another. To say one has a right means that one is owed something by another. One cannot speak of this right without referencing, at least implicitly, said other. To say one has a duty means that one owes something to another. One cannot speak of this duty without referencing, at least implicitly, said other.
This, then, is why it is absurd to speak of rights as existing when removed from historic and social context. A man exists within a particular time and place. This particular time and place governs the context of a man's relationships. And it is only within said relationships that the idea of rights has any actual content.