The crux of the issue is that one can distinguish four kinds of living creatures:
- sentient humans
- non-sentient humans
- sentient non-humans
- non-sentient non-humans
The presently dominant view which assigns rights to being human discriminates against sentient non-human beings. Singer et.al. believe that this is wrong and they have a point: why should one’s genetic makeup decide on rights? After all, this is basically what Nazi Germany did, except that the line is drawn in a different place.
On the other hand, their view which instead assigns rights to sentience discriminates against non-sentient human beings. Most people believe that is wrong and they have a good reason to believe so.
And does the Bible say anything about rights? No, it says
Thou shalt not kill. The
rights, as we understand them today, are a concept from the Enlightenment philosophy, and under such philosophy, they are determined through a social contract. Recall the Declaration of Independence:
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain inalienable rights, that among these are life, liberty and the pursuit of happiness…
We hold.
We is the subject in this phrase, not
God, and so
we establish a social contact which defines these rights as
we understand them. And that particular social contact was originally defined in such a way, that it would deprive a large class of people of their liberty. Thus if a society agrees to a social contract that discriminates the unborn, so be it.