Abstract

Over the last several decades many abortion advocates have attempted to spread confusion and doubt concerning the beginnings of human life. A particularly cynical strategy has involved invoking the authority historical thinkers, especially Doctors of the Church, to support the claim that (at least) early abortion does not constitute homicide because the early embryo is not yet fully human. Anyone familiar with context of these historical thinkers should realize that their specific judgments regarding abortion are now obsolete in virtue of their primitive scientific understanding of embryology. In what follows, I summarize the Aristotelian embryology that explains why these historical thinkers held the views that they did. I then explore how we should best understand their broader ethical views in light of our vastly superior contemporary knowledge of human embryology. Unsurprisingly, it turns out that if we apply the contemporary empirical findings of embryology the very same metaphysical and ethical principles informing the thinking of the historical figures supports the prolife position.