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1871, coined from Latin solus "alone" (see sole (adj.)) + ipse "self." The view or theory that self is the only object of real knowledge or the only thing that is real. "The identification of one's self with the Absolute is not generally intended, but the denial of there being really anybody else" [Century Dictionary].
The belief that all reality is just one's own imagining of reality, and that one's self is the only thing that exists.
in philosophy, formerly, moral egoism (as used in the writings of Immanuel Kant), but now, in an epistemological sense, the extreme form of subjective idealism that denies that the human mind has any valid ground for believing in the existence of anything but itself. The British idealist F.H. Bradley, in Appearance and Reality (1897), characterized the solipsistic view as follows: "I cannot transcend experience, and experience is my experience. From this it follows that nothing beyond myself exists; for what is experience is its (the self 's) states."