Peter Singer published this three years ago yesterday, in the New York Times Magazine:
What is a human life worth? You may not want to put a price tag on a it. But if we really had to, most of us would agree that the value of a human life would be in the millions. Consistent with the foundations of our democracy and our frequently professed belief in the inherent dignity of human beings, we would also agree that all humans are created equal, at least to the extent of denying that differences of sex, ethnicity, nationality and place of residence change the value of a human life.
With Christmas approaching, and Americans writing checks to their favorite charities, it’s a good time to ask how these two beliefs — that a human life, if it can be priced at all, is worth millions, and that the factors I have mentioned do not alter the value of a human life — square with our actions.
More here.