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In metaphysics, identity (from Latin: identitas, "sameness") is the relation each thing bears only to itself. [1] [2] The notion of identity gives rise to many philosophical problems, including the identity of indiscernibles (if x and y share all their properties, are they one and the same thing?), and questions about change and personal identity over time (what has to be the case for a person ...
Objectivism, the philosophy founded by novelist Ayn Rand, is grounded in three axioms, one of which is the law of identity, "A is A." In the Objectivism of Ayn Rand, the law of identity is used with the concept existence to deduce that that which exists is something. [6] In Objectivist epistemology logic is based on the law of identity. [7]
The teletransportation paradox or teletransport paradox (also known in alternative forms as the duplicates paradox) is a thought experiment on the philosophy of identity that challenges common intuitions on the nature of self and consciousness, formulated by Derek Parfit in his 1984 book Reasons and Persons. [1]
Personal identity is the unique numerical identity of a person over time. [1] [2] Discussions regarding personal identity typically aim to determine the necessary and sufficient conditions under which a person at one time and a person at another time can be said to be the same person, persisting through time.
Open individualism is a view in the philosophy of self, ... 617 It is a theoretical solution to the question of personal identity, ...
Smart's identity theory dealt with some extremely long-standing objections to physicalism by comparing the mind–brain identity thesis to other identity theses well known from science, such as the thesis that lightning is an electrical discharge, or that the morning star is the evening star.
Gottfried Leibniz's Principle of the identity of indiscernibles states that two things are identical if and only if they share the same and only the same properties. This is a principle which defines identity rather than difference, although it established the tradition in logic and analytical philosophy of conceiving of identity and difference as oppositional.
Sources of the Self: The Making of the Modern Identity [1] is a work of philosophy by Charles Taylor, published in 1989 by Harvard University Press. It is an attempt to articulate and to write a history of the "modern identity".