Nonduality is a central concept in certain spiritual and philosophical traditions, mainly in the East, which affirms the fundamental unity of reality beyond appearances of duality and separation.
This means that, despite the diversity and multiplicity of forms that we perceive in the world, there exists an underlying unity that transcends these apparent distinctions. This concept is often explored in traditions such as Advaita Vedanta (in India), Buddhism (notably Mahayana and Zen), as well as in certain forms of Taoism.