"Being No One" is a philosophical work by Thomas Metzinger that explores the nature of self and consciousness. Metzinger argues that the self is not a singular entity but rather a complex process created by the brain. He suggests that our sense of self is an illusion, constructed from various cognitive functions and experiences. The book delves into the implications of this view for understanding personal identity and subjective experience. Metzinger emphasizes that recognizing the illusory nature of the self can lead to greater awareness and insight into human consciousness, ultimately challenging traditional notions of individuality and existence.