Other (philosophy)

In philosophy, the Other describes any person or thing seen as separate or different from oneself. This perceived difference is essential to how people build their own sense of identity, because confronting otherness helps mark where the self ends and the rest begins. Within phenomenology, the Other is not a passive observer but actively shapes the self, acting like a mirror through which the self is reflected and understood. The "constitutive Other" refers to the internal relationship between a person’s essential nature and their physical body, highlighting how differences within the self also play a role.

Beyond the individual, the concept extends into social and political life. Otherness refers to the traits and characteristics assigned to people or groups seen as falling outside the dominant social norm—based on race, ethnicity, gender, sexual orientation, religion, neurodivergence, disability, or any other marker of identity. The process of Othering involves labeling and defining individuals or groups as the Other, often reinforcing power imbalances and leading to marginalization, exclusion, or discrimination. This can push those deemed different to the edges of society, denying them full participation and access to resources. Thus, the Other is not merely an abstract idea but a powerful force shaping social relations and personal experience.

Historically, the concept of the self requires the constitutive Other as its necessary counterpart. In the late 18th century, Georg Wilhelm Friedrich Hegel introduced the Other as a component of self-consciousness, building on earlier ideas about self-awareness from Johann Gottlieb Fichte. John Stuart Mill first formulated the idea of the other mind in 1865. Edmund Husserl applied the Other as the basis for intersubjectivity, describing it in 1931 as an alter ego—an other self—that poses an epistemological problem, being only a perception of the self’s consciousness. Jean-Paul Sartre, in 1943, used the dialectic of intersubjectivity to show how the Other alters the world, orienting it toward the Other rather than the self, and saw the Other as a psychological phenomenon rather than a radical threat. Simone de Beauvoir applied this concept to Hegel’s lord-bondsman dialectic in 1949, finding it analogous to the man-woman relationship and explaining society’s treatment of women.

The question of why one exists as on