When I finished my second post about abortion, I promised two more on the subject.
Libertarians won’t like this, but I must declare that I do not believe in natural rights. There is absolutely nothing “natural” about rights. What we get from nature is an imperative, a drive to survive. Since we are both social and thinking animals, over a very, very long time of social and intellectual evolution we rose above the biological imperative and came to a general agreement on some basic rules to help the survival of our species.