Abstract

This article examines the possibility of determining the ontological status of the embryo and the moral foundation of the framework on which this status is based. Discussions on the ontological status of the embryo are analyzed within the frameworks of substance and continuity theories. Substance theory posits that the embryo possesses an immutable essence in ontological terms. This theory, being metaphysical in nature, aligns with theistic perspectives, which hold that God grants humans a soul from His own spirit. Consequently, humans are perceived as possessing an unchanging essence or nature. This perspective entails a metaphysical view consistent with substance ontology. Furthermore, in theistic thought, humans are regarded as beings deserving of dignity because they are created by God. Examples supporting this view are presented from Christian and Islamic thought, expressed as the concept of imago Dei and the notion of humanity being elevated above all other creations, respectively. The concept of human dignity found in theistic thought provides a metaphysical foundation supporting substance theory and endows humans with moral status. This notion leads to the conclusion that the thesis of human dignity, which attributes an ontological status to the embryo (viewing it as a potential human), also confers moral status upon the embryo. The idea that humans are ontologically dignified beings implies that every stage of human development, from the earliest biological moment of the embryonic phase to infancy and beyond, holds value in relation to the previous stage, further supporting this concept. The dignity thesis appears closely tied to the species, nature, and potentiality of the embryo. Initially, the relationship between dignity and the speciesist approach is emphasized. However, anti-speciesist perspectives argue for the equality of humans with other living beings, advancing secular critiques of the concept of human dignity. In response, this study seeks to establish a consistent position on the concept of dignity by addressing the points of contention between theistic and secular interpretations. The substance ontology adopted for the discussion of the embryo’s personal identity is further supported by the metaphysical thesis of essentialism. Essentialism asserts that every species has its own immutable essence. It is argued that the essential qualities of natural species emerge at specific stages of embryonic development. In contrast, advocates of continuity theory reject the idea that the embryo possesses an unchanging essence or that there exists a definitive threshold distinguishing one stage of human development from another. They claim that the moral status of the embryo can only be established on a conventional basis, which provides a precarious foundation rather than a robust one for its protection. Therefore, this study argues that providing an ontological foundation of a substantial nature for the embryo is more coherent. In addition, the article addresses criticisms of substance ontology and the thesis of human dignity, offering reasoned responses. While explaining the ontological status of the embryo within the framework of substance theory, it is demonstrated that this theory aligns with concepts such as human dignity, speciesism, and essentialism. The argument from potentiality concerning the embryo's ontology is highlighted as particularly significant. This argument resonates with the theistic notion that the soul or essence given to humans by God bestows dignity by virtue of its potential state. Through these approaches, the article concludes that the ontological status of the embryo determines its moral status. Analytical methods from the field of bioethics are employed to examine metaphysical issues. The significance of this study lies in addressing discussions about the ontological status of the embryo, a topic extensively explored in Western literature from a secular perspective but less frequently analyzed on a metaphysical basis.