Abstract

This article critiques the contentions a) that human life is more valuable than animal life because it has a quality lacking in animal life due to the greater richness of human life and b) that because it is inferior, animal life may be sacrificed to benefit humans. Conclusions: value of life does not depend solely on quality; quality of life does not depend solely on richness; comparisons of richness are arbitrary; we lack sufficient evidence to comparatively value the quality of human and animal lives; and superior value of life does not entail that inferiors may be sacrificed for it.