The debate surrounding abortion is fraught with deeply held moral convictions, and two of the most influential philosophical arguments come from Don Marquis's "Why Abortion Is Immoral" and Judith Jarvis Thomson's "A Defense of Abortion." While Thomson employs a powerful thought experiment to challenge the notion that a fetus has a right to life, Marquis offers a compelling argument based on the deprivation of future experiences. Upon careful examination, Marquis's argument, by focusing on the inherent value of a potential future, presents a more consistently robust ethical framework for understanding the moral status of abortion than Thomson's, which, while impactful, relies on specific analogies that can be contested.
Marquis's central thesis is that abortion is morally impermissible because it deprives the fetus of a future of value. He argues that what makes killing an adult morally wrong is not merely the loss of that person's present consciousness or experiences, but the destruction of their future potential – their future joys, opportunities, and experiences. He posits that a fetus, even at a very early stage, possesses this potential for a future of value, and therefore, abortion is analogous to killing an adult human being. This argument is potent because it sidesteps the often-contentious debate about when personhood begins or whether a fetus is conscious. Instead, it grounds the moral wrongness of abortion in the loss of a future, a concept that resonates with our intuitive understanding of why ending a life is tragic. For instance, the loss of a young life cut short before experiencing love, career, or raising a family is widely considered a profound tragedy, and Marquis extends this logic to the fetal stage.
Thomson's argument, conversely, takes a different approach. Her famous violinist analogy, where a person wakes up hooked up to a famous unconscious violinist whose life depends on their continued use of their kidneys, aims to demonstrate that even if a fetus has a right to life, it does not necessarily have a right to use another person's body. This analogy is designed to show that the right to life does not include the right to be sustained by another unwilling person. While this thought experiment effectively highlights the potential conflict between a fetus's right to life and a woman's bodily autonomy, its strength is also its limitation. The analogy relies on a very specific and somewhat unusual scenario. Critics often point out that the typical pregnancy is not analogous to being involuntarily connected to a stranger for nine months. In most cases, pregnancy is a natural biological process, and the connection between mother and fetus is one of biological kinship and potential for relationship, unlike the purely instrumental and imposed connection in Thomson's example. This makes the applicability of the violinist analogy to the vast majority of abortions debatable.
Furthermore, Marquis's framework offers a more universalizable principle. His focus on the deprivation of a future of value can be applied consistently across different stages of fetal development and even to other ethically complex situations. It provides a clear, if stark, criterion for moral evaluation. If an entity has a potential future of value, then intentionally ending that potential is prima facie wrong. This principle doesn't require the entity to be self-aware or possess certain cognitive abilities, which are often the points of contention in personhood debates. Thomson's argument, while powerful in defending the permissibility of abortion in certain circumstances, does not offer a comprehensive moral framework for why abortion is wrong in general. It primarily addresses the conflict of rights, not the inherent moral status of the fetus itself.
In conclusion, while Judith Jarvis Thomson's "A Defense of Abortion" provides a crucial and influential argument for a woman's right to bodily autonomy, Don Marquis's "Why Abortion Is Immoral" offers a more fundamental and ethically coherent reason for considering abortion morally wrong. By centering his argument on the deprivation of a future of value, Marquis establishes a framework that respects the potential life of the fetus without getting bogged down in the complexities of personhood or consciousness debates. His focus on lost futures makes his argument a formidable ethical challenge to the permissibility of abortion.