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Personal identity

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Personal identity

What does it take for individuals to persist from moment to moment—or in other words, for the same individual to exist at different moments?

In philosophy, the issue of personal identity[1] concerns several loosely related issues, in particular persistence,[note 1] change,[note 2] sameness,[note 3] and time. Personal identity is the distinct personality of an individual and is concerned with the persisting entity particular to a given individual. The personal identity structure[2][note 4] appears to preserve itself from the previous version in time when it is modified. It is the individual characteristics arising from personality by which a person is recognized or known.

Generally, it is the unique numerical identity of persons through time.[3][4] That is to say, 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.[note 5] In the modern philosophy of mind, this concept of personal identity is sometimes referred to as the diachronic problem[note 6] of personal identity.[5] The synchronic problem[note 7] is grounded in the question of what features or traits characterize a given person at one time.

Identity is an issue for both continental philosophy and analytic philosophy. A question in continental philosophy is in what sense can the contemporary conception of identity be maintained, while many prior propositions, postulates, and presuppositions about the world are different.[6][7]


  • Theories 1
    • Continuity of substance 1.1
      • Bodily substance 1.1.1
      • Mental substance 1.1.2
    • Continuity of consciousness 1.2
      • Locke's conception 1.2.1
      • Philosophical intuition 1.2.2
      • Psychological continuity 1.2.3
    • The bundle theory of the self 1.3
    • The no-self theory 1.4
  • See also 2
  • References and notes 3
  • 4 External articles


Continuity of substance

Bodily substance

One concept of personal persistence over time is simply to have continuous bodily existence.[8] However, as the asserts the proposition that a psychological relation is not necessary for personal continuity.[note 8] This personal identity ontology assumes the relational theory[9] of life-sustaining processes instead of bodily continuity.

Derek Parfit presents a thought experiment designed to bring out intuitions about the corporeal continuity. This thought experiment discusses cases in which a person is teletransported from Earth to Mars.[note 9] Ultimately, the inability to specify where on a spectrum does the transmitted person stop being identical to the initial person on Earth appears to show that having a numerically identical physical body is not the criterion for personal identity[10][note 10]

Mental substance

In another concept of mind, the set of cognitive faculties[note 11] are considered to consist of an immaterial substance, separate from and independent of the body.[11] If a person is then identified with their mind, rather than their body—if a person is considered to be their mind—and their mind is such a non-physical substance, then personal identity over time may be grounded in the persistence of this non-physical substance, despite the continuous change in the substance of the body it is associated with. The mind-body problem[12][13][14][15] concerns the explanation of the relationship, if any, that exists between minds, or mental processes, and bodily states or processes. One of the aims of philosophers who work in this area is to explain how a non-material mind can influence a material body and vice-versa.

However, this is not uncontroversial or unproblematic, and adopting it as a solution raises questions. human brain) possessing electrochemical properties. A related problem is to explain how propositional attitudes (e.g. beliefs and desires) can cause neurons of the brain to fire and muscles to contract in the correct manner. These comprise some of the puzzles that have confronted epistemologists and philosophers of mind from at least the time of René Descartes.

Continuity of consciousness

Locke's conception

An Essay Concerning Human Understanding in four books (1690) by John Locke (1632-1704)

John Locke considered personal identity[16] (or the self) to be founded on consciousness (viz. memory), and not on the substance of either the soul or the body. Book II Chapter XXVII entitled "On Identity and Diversity" in An Essay Concerning Human Understanding (1689) has been said to be one of the first modern conceptualizations of consciousness as the repeated self-identification of oneself. Through this identification, moral responsibility could be attributed to the subject and punishment and guilt could be justified, as critics such as Nietzsche would point out.

According to Locke, personal identity (the self) "depends on consciousness, not on substance" nor on the soul. We are the same person to the extent that we are conscious of the past and future thoughts and actions in the same way as we are conscious of present thoughts and actions. If consciousness is this "thought" which "goes along with the substance ... which makes the same person", then personal identity is only founded on the repeated act of consciousness: "This may show us wherein personal identity consists: not in the identity of substance, but... in the identity of consciousness". For example, one may claim to be a reincarnation of Plato, therefore having the same soul substance. However, one would be the same person as Plato only if one had the same consciousness of Plato's thoughts and actions that he himself did. Therefore, self-identity is not based on the soul. One soul may have various personalities.

Neither is self-identity founded on the body substance, argues Locke, as the body may change while the person remains the same. Even the identity of animals is not founded on their body: "animal identity is preserved in identity of life, and not of substance", as the body of the animal grows and changes during its life. On the other hand, identity of humans is based on their consciousness.[note 13]

But this interesting border-case leads to this problematic thought that since personal identity is based on consciousness, and that only oneself can be aware of his consciousness, exterior human judges may never know if they really are judging – and punishing – the same person, or simply the same body. In other words, Locke argues that may be judged only for the acts of the body, as this is what is apparent to all but God; however, are in truth only responsible for the acts for which are conscious. This forms the basis of the insanity defense: one cannot be held accountable for acts from which one was unconscious – and therefore leads to interesting philosophical questions:

personal identity consists [not in the identity of substance] but in the identity of consciousness, wherein if Socrates and the present mayor of Queenborough agree, they are the same person: if the same Socrates waking and sleeping do not partake of the same consciousness, Socrates waking and sleeping is not the same person. And to punish Socrates waking for what sleeping Socrates thought, and waking Socrates was never conscious of, would be no more right, than to punish one twin for what his brother-twin did, whereof he knew nothing, because their outsides were so like, that they could not be distinguished; for such twins have been seen.[17]

Or again:

PERSON, as I take it, is the name for this self. Wherever a man finds what he calls himself, there, I think, another may say is the same person. It is a forensic term, appropriating actions and their merit; and so belong only to intelligent agents, capable of a law, and happiness, and misery. This personality extends itself beyond present existence to what is past, only by consciousness, --whereby it becomes concerned and accountable; owns and imputes to itself past actions, just upon the same ground and for the same reason as it does the present. All which is founded in a concern for happiness, the unavoidable concomitant of consciousness; that which is conscious of pleasure and pain, desiring that that self that is conscious should be happy. And therefore whatever past actions it cannot reconcile or APPROPRIATE to that present self by consciousness, it can be no more concerned in it than if they had never been done: and to receive pleasure or pain, i.e. reward or punishment, on the account of any such action, is all one as to be made happy or miserable in its first being, without any demerit at all. For, supposing a MAN punished now for what he had done in another life, whereof he could be made to have no consciousness at all, what difference is there between that punishment and being CREATED miserable? And therefore, conformable to this, the apostle tells us, that, at the great day, when every one shall 'receive according to his doings, the secrets of all hearts shall be laid open.' The sentence shall be justified by the consciousness all person shall have, that THEY THEMSELVES, in what bodies soever they appear, or what substances soever that consciousness adheres to, are the SAME that committed those actions, and deserve that punishment for them.[18]

Henceforth, Locke's conception of personal identity founds it not on the substance or the body, but in the "same continued consciousness", which is also distinct from the soul since the soul may have no consciousness of itself (as in reincarnation). He creates a third term between the soul and the body - and Locke's thought may certainly be meditated by those who, following a scientist ideology,[note 14] would identify too quickly the brain to consciousness. For the brain, as the body and as any substance, may change, while consciousness remains the same.[19][20] Therefore personal identity is not in the brain, but in consciousness.

However, Locke's theory of self reveals[21][note 15] debt to theology and to apocalyptic "great day",[22][23][24][25] which by advance excuse[note 16] any failings of human justice and therefore humanity's miserable state.[note 17] The problem of personal identity is at the center of discussions about life after death and, to a lesser extent, immortality. In order to exist after death, there has to be a person after death who is the same person as the person who died.

Philosophical intuition

Bernard Williams presents a thought experiment appealing to the intuitions about what it is to be the same person in the future.[26] The thought experiment consists of two approaches to the same experiment.

For the first approach Williams suggests that suppose that there is some process by which subjecting two persons to it can result in the two persons have “exchanged” bodies. The process has put into the body of person B the memories, behavioral dispositions, and psychological characteristics of the person who prior to undergoing the process belonged to person A; and conversely with person B. To show this one is to suppose that before undergoing the process person A and B are asked to which resulting person, A-Body-Person or B-Body-Person, they wish to receive a punishment and which a reward. Upon undergoing the process and receiving either the punishment or reward, it appears to that A-Body-Person expresses the memories of choosing who gets which treatment as if that person was person B; conversely with B-Body-Person.

This sort of approach to the thought experiment appears to show that since the person who expresses the psychological characteristics of person A to be person A, then intuition is that psychological continuity is the criterion for personal identity.

The second approach is to suppose that someone is told that one will have memories erased and then one will be tortured. Does one need to be afraid of being tortured? The intuition is that people will be afraid of being tortured, since it will still be one despite not having one's memories. Next, Williams asked one to consider several similar scenarios.[note 18] Intuition is that in all the scenarios one is to be afraid of being tortured, that it is still one's self despite having one's memories erased and receiving new memories. However, the last scenario is an identical scenario to the one in the first scenario.[note 19]

In the first approach, intuition is to show that one's psychological continuity is the criterion for personal identity, but in second approach, intuition is that it is one's bodily continuity that is the criterion for personal identity. To resolve this conflict Williams feels one's intuition in the second approach is stronger and if he was given the choice of distributing a punishment and a reward he would want his body-person to receive the reward and the other body-person to receive the punishment, even if that other body-person has his memories.

Psychological continuity

In psychology, personal continuity, also called personal persistence, is the uninterrupted connection concerning a particular person of his or her private life and personality. Personal continuity is the union affecting the facets arising from personality in order to avoid discontinuities from one moment of time to another time.[note 20][27] Personal continuity is an important part of identity; this is the process of ensuring that the qualities of the mind, such as self-awareness, sentience, sapience, and the ability to perceive the relationship between oneself and one's environment, are consistent from one moment to the next. Personal continuity is the property of a continuous and connected period of time[28][29] and is intimately related to do with a person's body or physical being in a single four-dimensional continuum.[30] Associationism, a theory of how ideas combine in the mind, allows events or views to be associated with each other in the mind, thus leading to a form of learning. Associations can result from contiguity, similarity, or contrast. Through contiguity, one associates ideas or events that usually happen to occur at the same time. Some of these events form an autobiographical memory in which each is a personal representation of the general or specific events and personal facts.

Ego integrity is the psychological concept of the

  • John Locke on Personal Identity.
  • William S. Larkin. Persons, Animals, And Bodies.

External articles

  • Carsten Korfmacher, 'Personal Identity', in "The Internet Encyclopedia of Philosophy"
  • Roots, Identity, Nationality A brief critical analysis of the concept of identity
  • Phineas Parkhurst Quimby on Personal Identity
  • Max More, The Diachronic Self : Identity, Continuity, Transformation.
  • Vakhtangi Makhniahvilim Parfit and Whitehead on personal identity.
  • Personal Identity, Reductionism and the Necessity of Origins. Erkenntnis. Volume 51, Numbers 2-3 / November 1999.
  • V Chappell, Locke on Consciousness.
  • James Giles, The No-Self Theory: Hume, Buddhism, and Personal Identity, Philosophy East and West, 1993.
  • The Unity of Consciousness.
  • D Cole, Artificial intelligence and personal identity. Synthese, 1991.
  • Nervous system development -- network origins.
  • 'Brain Death and Technological Change:  Personal Identity, Neural Prostheses and Uploading'
  • Forum on Personal Identity
  • The Immateriality of the Soul and Personal Identity
  • Personal Identity — Stanford Encyclopedia of Philosophy
  • 'Personal Identity and the Methodology of Imaginary Cases'
  • Personal Identity Syllabus — 'The Metaphysics of Persons'
  • PHI 330 Homepage — Metaphysics
  • PHL 242-442 — Metaphysics
  • 'Staying Alive   The Personal Identity Game
  • Tannsjo, Torbjorn — 'Morality and Personal Identity'
  • Topics in Metaphysics — Personal Identity
  • 20th WCP:  Persons and Personal Identity
  • The Duplicates Paradox by Ben Best; theories about the problem of personal continuity.
  • William H. Swatos (Jr. Editor), Identity. Encyclopedia of Religion and Society.
  • Ego identity formation in middle adolescence.
  • Personal Identity & Immortality'.

Online articles

  • M Kapstein, (Review) Collins, Parfit, and the Problem of Personal Identity in Two Philosophical Traditions. Philosophy East and West, 1986.
  • N Agar, Functionalism and Personal Identity. Nous, 2003.
  • Christine M. Korsgaard, Personal Identity and the Unity of Agency: A Kantian Response to Parfit. Philosophy and Public Affairs, Vol. 18, No. 2 (Spring, 1989), pp. 101-132.
  • Andrew Brennan, Personal identity and personal survival. Analysis, 42, 44-50. 1982.
  • Lloyd Fields, Parfit on personal identity and desert. Phil Quarterly, 37, 432-441. 1987.
  • Brian Garrett, Personal identity and extrinsicness. Mind, 97, 105-109. 1990.
  • Derek Parfit, Personal identity. Philosophical Review, 80, no.1, 3-27. 1971.
  • John Robinson, Personal identity and survival. Journal of Philosophy, 85, 319-328. 1988.
  • E J Borowski, Diachronic Identity as Relative Identity. The Philosophical Quarterly, 1975.
  • R W Perrett, C Barton, Personal Identity, Reductionism and the Necessity of Origins. Erkenntnis, 1999.
  • B Williams, Bodily Continuity and Personal Identity. Analysis, 1960.
  • B Romero, Self-maintenance therapy in Alzheimer's disease. Neuropsychological Rehabilitation, 2001.
  • BM Ross, Remembering the Personal Past: Descriptions of Autobiographical Memory. Oxford University Press, 1991. ISBN 0-19-506894-7
  • D Mohr, Development of attributes of personal identity. Developmental Psychology, 1978.
  • DG Thompson, The Religious Sentiments of the Human Mind. 1888.
  • DJ Kroger, Identity Development: Adolescence Through Adulthood. Sage Publications Inc., 2006. 303 pages. ISBN 0-7619-2960-6
  • G Foulds, Personal continuity and psycho-pathological disruption. PMID 14197795
  • GF Hellden, Personal Context and Continuity of Human Thought: Recurrent Themes in a Longitudinal Study of Students' Conceptions.
  • MJ Chandler, JE Marcia, B Publishers, Personal Persistence, Identity Development, and Suicide. Blackwell Publishing, 2003. ISBN 1-4051-1879-2
  • J Copner,The Faith of a Realist. Williams and Norgate, 1890. 351 pages.
  • J Habermas, The paradigm shift in Mead. In M. Aboulafia (Ed.), Philosophy, social theory, and the thought of George Herbert Mead 1991. Albany, NY: State University of New York Press.
  • J Jacobson, Islam in Transition: Religion and Identity Among British Pakistani Youth. Routledge, 1998. 177 pages. ISBN 0-415-17085-0
  • P. Ricoeur, Soi-même comme un autre, 1990. Paris:Seuil. (en: Oneself as another)
  • J Sully, Illusions: A Psychological Study. Appleton, 1881. 372 pages.
  • JC LaVoie, Ego identity formation in middle adolescence. Journal of Youth and Adolescence, 1976.
  • Michael Metzeltin, Wege zur Europäischen Identität. Individuelle, nationalstaatliche und supranationale Identitätskonstrukte, Berlin, Frank & Timme, 2010. 285 pages. ISBN 978-3-86596-297-3
  • JM Shorter, More About Bodily Continuity and Personal Identity. Analysis, 1962.
  • S Seligman, RS Shanok, Subjectivity, Complexity and the Social World. Psychoanalytic Dialogues, 1995.
  • SD Bozinovski, Self-Neglect Among the Elderly: Maintaining Continuity of Self. DIANE Publishing, 1998. 434 pages. ISBN 0-7881-7456-8
  • W Greve, K Rothermund, D Wentura, The Adaptive Self: Personal Continuity and Intentional Self-development. 2005.
  • WE Conn, Erikson’s “identity”: an essay on the psychological foundations of religious ethics.
  • Michel Weber, « Process and Individuality » in Maria Pachalska and Michel Weber (eds.), Neuropsychology and Philosophy of Mind in Process. Essays in Honor of Jason W. Brown, Frankfurt / Lancaster, Ontos Verlag, 2008, pp. 401-415.

Articles and publications

  • Vere Claiborne Chappell, The Cambridge Companion to Locke. Cambridge University Press, 1994. 343 pages. ISBN 0-521-38772-8
  • Harold W. Noonan, Personal Identity. Routledge, 2003. 296 pages. ISBN 0-415-27315-3
  • Søren Kierkegaard, Either/Or
  • Søren Kierkegaard, The Sickness Unto Death
  • Daniel Dennett, Where am I?
  • Derek Parfit, Reasons and Persons, part 3.
  • Bernard Williams, The Self and the Future, in Philosophical Review 79.
  • John Locke, Of Ideas of Identity and Diversity
  • E. J. Lowe, A Survey of Metaphysics, chapters 2,3, 4.
  • J. Cim & E.Sosa, A Companion to Metaphysics. Page 380, "persons and personal identity".
  • Mark Siderits, Personal Identity and Buddhist Philosophy. Ashgate Publishing, Ltd., 2003. 231 pages. ISBN 0-7546-3473-6
  • Marc Slors, The Diachronic Mind. Springer, 2001. 234 pages. ISBN 0-7923-6978-5
  • James Giles, No Self to be Found: the Search for Personal Identity University Press of America, 1997.
  • Shaun Gallagher, Jonathan Shear, Models of the Self. Imprint Academic, 1999. 524 pages. ISBN 0-907845-09-6
  • E. Jonathan Lowe, The Possibility of Metaphysics: Substance, Identity, and Time. Oxford University Press, 2001. 288 pages. ISBN 0-19-924499-5
  • Eric Todd Olson, The Human Animal: Personal Identity Without Psychology. Oxford University Press, 1997. 189 pages. ISBN 0-19-513423-0
  • John Perry, The problem of personal identity. 1975.
  • John Perry, ed. Personal Identity. Berkeley: University of California Press.
  • Thomas Reid, Of identity. Of Mr. Locke's account of our personal identity. In Essays on the Intellectual Powers of Man. Reprinted in Perry, ed. 1975.
  • J. Butler, Of personal identity. In J. Angus, ed. The Analogy of Religion. London.
  • G Kopf, Beyond Personal Identity: Dogen, Nishida, and a Phenomenology of No-Self. Routledge, 2001. ISBN 0-7007-1217-8
  • John Perry, A Dialogue on Personal Identity and Immortality. ISBN 0-915144-53-0
  • H. B. Paksoy, Identities: How Governed, Who Pays? JA71 .P35 2001. ISBN 0-9621379-0-1 [1]
  • A. E. Pitson, Hume's Philosophy of the Self. Routledge, 2002. 224 pages. ISBN 041524801
  • Brian Garrett, Personal Identity and Self-Consciousness. Routledge, 1998. 137 pages. ISBN 0-415-16573-3
  • E. J Lowe, An Introduction to Philosophy of the Mind. Cambridge University Press, 2000.

General information

  1. ^ See also: Continuum (measurement), Persistent data structure, and Habit (psychology)
  2. ^ See also: Change (mathematics), Personal development and Impermanence.
  3. ^ See also: Difference (philosophy) and Distinct.
  4. ^ See also: Consciousness.
  5. ^ Or, the essence of a self-conscious person, that which enables the person uniquely what they are, and which further persists over time despite superficial modifications, making him or her same person at different points in time.
  6. ^ Greek: Διαχρονικός (Diahronikos)
  7. ^ See also: Synchronicity and Synchronization.
  8. ^ See also: Disjunctive syllogism, Affirming a disjunct, Proof by assertion.
  9. ^ This thought experiment discusses the coherent transfer of matter from one point to another without traversing the physical space between. In the one case, the person enters the teletransporter and has each molecule of his body disassembled, teletransported to Mars, and then reassembled. In another case the person enters the teletransporter where that person’s body is destroyed while all the exact states of that person’s cells are recorded. This information is then teletransported to Mars, where another machine uses organic material to produce a perfect copy of that person’s body. The question is whether in either of these cases the person on Mars is identical to the person on Earth. Suppose that these two cases are just the furthest opposite points on a spectrum. In-between these two cases there are more cases in which an increase amount of the person on Mars is constituted of the numerically identical matter as the person on Earth. The question for that the criterion for personal identity, becomes where on this spectrum does the person on Mars stop being identical to the person on Earth. Is it at 1, 51, or 99.9 percent? It appears a sound limit is unattainable.
  10. ^ For a discussion of these issues, see the 2013 article by Chris Durante in Philosophy Now, accessible here
  11. ^ These faculties enable consciousness, perception, thinking, judgement, and memory
  12. ^ This may be pleasant, unpleasant, or neutral.
  13. ^ Take for example a prince's mind which enters the body of a cobbler: to all exterior eyes, the cobbler would remain a cobbler. But to the prince himself, the cobbler would be himself, as he would be conscious of the prince's thoughts and acts, and not those of the cobbler. A prince's consciousness in a cobbler's body: thus the cobbler is, in fact, a prince.
  14. ^ Not to be confused with Scientism
  15. ^ Locke's concept of self being ‘very remote’ from the matters of "An Essay Concerning Human Understanding", and not presumably on "The Reasonableness of Christianity, as Delivered in the Scriptures" nor "A Vindication of the Reasonableness of Christianity".
  16. ^ Not to be confused with rationalization (making excuses).
  17. ^ Or, the human conditions of unhappiness, suffering and/or pain.
  18. ^ The synoptical collage of an event or series of actions and events are:
    • One has memories erased, and are given new "fake" memories (counterfeit), and then one is to be tortured;
    • have one's memories erased, are given copies of another's memories, and then are to be tortured;
    • have one's memories erased, are given another's genuine memories, and then one is to be tortured;
    • have one's memories erased, are given another’s genuine memories, that person is given one's memories, and then one is to be tortured.
  19. ^ With the supposed superfluous information included in the last scenario.
  20. ^ For more, see: consciousness.
  21. ^ See also: structural cohesion
  22. ^ In the Appendix to the Treatise, Hume stated that he was dissatisfied with his account of the self, yet he never returned to the issue.
  23. ^ See also: Nihilism, Post-left anarchy theory of self
    Not to be confused with Anatta.
  24. ^ And, presumably, resurrection.
  25. ^ See also: Psychological entropy.
  26. ^ See also: Phenotypic traits, Society (Social artifact), Culture (Cultural artifact), evolutionary psychology (criticism of evolutionary psychology).
  27. ^ See also: Alzheimer
  28. ^ Though, this does not address the loose cohesion of self and other similar epistemological views.
  1. ^ Personal Identity [Internet Encyclopedia of Philosophy]
  2. ^ Essays in Radical Empiricism, "Does "consciousness" Exist?" William James, Ralph Barton Perry. 1912.
  3. ^ Personal Identity (Stanford Encyclopedia of Philosophy)
  4. ^ Identity (Stanford Encyclopedia of Philosophy)
  5. ^ An Essay Concerning Human Understanding; Volumes 1-3. By John Locke
  6. ^ Self and Subjectivity; "Identity, Sex, and the Metaphysics of Substance". Edited by Kim Atkins. p257.
  7. ^ Cultural Theory: An Anthology. Edited by Imre Szeman, Timothy Kaposy. p481. "Identity, Sex, and the Metaphysics of Substance"
  8. ^ The Human Animal: Personal Identity Without Psychology. By Eric T. Olson Lecturer Cambridge University
  9. ^ What Are We? : A Study in Personal Ontology: A Study in Personal Ontology. By Eric T. Olson Professor in Philosophy University of Sheffield
  10. ^ Chris Durante, A Philosophical Identity Crisis | Issue 97 | Philosophy Now
  11. ^ The Christian Library, Volumes 3-4. By Jonathan Going. 1835. p786+. (cf., p803 "Now all would believe in the separate existence of the soul if they had experience of its existing apart from the body. But the facts referred to proves that it does exist apart from one body with which it once was united, and though it is in union with another, yet as it is not adherent to the same, it is shown to have an existence separate from, and independent of that body.")
  12. ^ Descartes, R. (2008). Meditations on First Philosophy (Michael Moriarity translation of 1641 ed.). Oxford University Press. 
  13. ^ Robert M. Young (1996). "The mind-body problem". In RC Olby, GN Cantor, JR Christie, MJS Hodges, eds. Companion to the History of Modern Science (Paperback reprint of Routledge 1990 ed.). Taylor and Francis. pp. 702–11.  
  14. ^ Robinson, Howard (Nov 3, 2011). Edward N. Zalta, ed, ed. "Dualism". The Stanford Encyclopedia of Philosophy (Winter 2011 Edition). 
  15. ^ Henrik Lagerlund (2010). "Introduction". In Henrik Lagerlund, ed. Forming the Mind: Essays on the Internal Senses and the Mind/Body Problem from Avicenna to the Medical Enlightenment (Paperback reprint of 2007 ed.).  
  16. ^ An Essay Concerning Human Understanding; Volumes 1-3. By John Locke
  17. ^
  18. ^
  19. ^ Encyclopaedia britannica. Volume 18. Edited by Hugh Chisholm.p225+253.
  20. ^ John Locke on Personal Identity. Mens Sana Monogr › v.9(1); Jan-Dec 2011 by N Nimbalkar. 2011.
  21. ^ Sheridan, Patricia, "Locke's Moral Philosophy", The Stanford Encyclopedia of Philosophy (Winter 2012 Edition), Edward N. Zalta (ed.). (cf. "James Tyrell, one of those who attended that evening, is a source of enlightenment on this matter — he later recalled that the discussion concerned morality and revealed religion. But, Locke himself refers to the subjects they discussed that fateful evening as ‘very remote’ from the matters of the Essay.")
  22. ^ The Great Day of Atonement. By Charlotte Elizabeth Nebelin. Gould and Lincoln, 1859.
  23. ^ The great day; notes on the book of Revelation. By Rev. Thomas Graham.
  24. ^ The Great Day of the Lord. By Alexander Brown. Elliot Stock, 1894.
  25. ^ Dies iræ: the judgment of the great day viewed in the light of Scripture and Consciousness. By Robert Baker Girdlestone.
  26. ^ Bernard Williams, The Self and the Future, in Philosophical Review 79. No. 2. (Apr., 1970), p. 161-180
  27. ^ Identity and self-image. Mar 2009.
  28. ^ A Treatise of Human Nature. VII., Of contiguity and distance in space and time. 427+432. By David Hume.
  29. ^ An Essay Concerning Human Understanding, Volumes 1-3. Chapter XXVII. p46+69. By John Lock.
  30. ^ The Consequences of Modernity. "Modernity, Time, Space". By Anthony Giddens.
  31. ^ a b Personality: Critical Concepts. Edited by Lawrence A. Pervin, Cary L. Cooper.
  32. ^ Thinking Bodies. Edited by Juliet Flower MacCannell, Laura Zakarin
  33. ^ Body and will. By Henry Maudsley
  34. ^ The Four Temperaments. By Rudolf Steiner.
  35. ^ The Book of the Law, or Liber AL vel Legis. By Aleister Crowley, Aiwass
  36. ^ Managing Vulnerability: The Underlying Dynamics of Systems of Care. By Tim Dartington.
  37. ^ Human Behavior in the Social Environment: A Multidimensional Perspective. By José B. Ashford, Craig Winston LeCroy, Kathy L. Lortie
  38. ^ Abandonment to Divine Providence. By Jean-Pierre De Caussade
  39. ^ The Principles of Psychology, Volume 1. By William James
  40. ^ The Loss of Self. By Donna Cohen, Carl Eisdorfer.
  41. ^ The Legacy of Abandonment In Borderline Personality Disorder. By A. J Mahar.
  42. ^ The Guide. By R.K. Narayan.
  43. ^ A Treatise of Human Nature, I, IV, vi
  44. ^ A Treatise of Human Nature, 4.1, 2.
  45. ^ Buddhism: Way of Life & Thought. By Nancy Wilson Ross. p29.
  46. ^ The No-Self Theory: Hume, Buddhism, and Personal Identity. James Giles
  47. ^ James Giles, No Self to be Found: The Search for Personal Identity, University Press of America, 1997, p. 10
  48. ^ James Giles, 'The No-Self Theory: Hume, Buddhism, and Personal Identity, Philosophy East and West, 42, 1993
  49. ^ "Staying alive game - Examples of thought experiments on personal identity"

References and notes

Metaphysical necessity, Otium, Personally identifiable information, Personal life, Privacy, immaterialism, Personhood, Gender systems (Social construction of gender difference), The Persistence of Memory (short story), The Persistence of Memory, Transhumanism
Søren Kierkegaard, Philip K. Dick, Daniel Kolak, Gottlob Frege, Derek Parfit, Anthony Quinton, David Wiggins, Sydney Shoemaker, Bernard Williams, Peter van Inwagen, Carl Jung, Erik Erikson, Hugo Münsterberg, Wilhelm Wundt, Paul Ricœur, James Marcia, Mario Rodríguez Cobos
Mindstream, Consciousness, Dependent origination, Introspect, Meme, Mnemonic, Percept, Perdurantism, Synchronicity, Noumena, Neuroplasticity (Spike-timing-dependent plasticity), Hebbian theory, Dogen (being and time), process philosophy
Abstract object, Nominal identity, Open individualism, Personal life, Self-Schema, Self (philosophy), Identity and change, Mind/brain identity, Ship of Theseus, Narrative identity

See also

According to this line of criticism, the sense of self is an evolutionary artifact,[note 26] which saves time in the circumstances it evolved for. But sense of self breaks down when considering some events such as memory loss,[note 27] split personality disorder, brain damage, brainwashing, and various thought experiments.[49] When presented with imperfections in the intuitive sense of self and the consequences to this concept which rely on the strict concept of self, a tendency to mend the concept occurs, possibly because of cognitive dissonance.[note 28]

The Buddhist view of personal identity is also a no-self theory rather than a reductionist theory, because the Buddha rejects attempts to reconstructions in terms of consciousness, feelings, or the body in notions of an eternal, unchanging Self.[48]

The "no-self theory"[note 23] holds that the self cannot be reduced to a bundle because the concept of a self is incompatible with the idea of a bundle. Propositionally, the idea of a bundle implies the notion of bodily or psychological relations that do not in fact exist. James Giles, a principal exponent of this view, argues that the no-self or eliminativist theory and the bundle or reductionist theory agree about the non-existence of a substantive self. The reductionist theory, according to Giles, mistakenly resurrects the idea[note 24] of the self[46] in terms of various accounts about psychological relations.[note 25] The no-self theory, on the other hand, "lets the self lie where it has fallen".[47] This is because the no-self theory rejects all theories of the self, even the bundle theory. On Giles' reading, Hume is actually a no-self theorist and it is a mistake to attribute to him a reductionist view like the bundle theory. Hume's assertion that personal identity is a fiction supports this reading, according to Giles.

The no-self theory

In short, what matters for Hume is not that 'identity' exists but that the relations of causation, contiguity, and resemblances obtain among the perceptions. Critics of Hume state in order for the various states and processes of the mind to seem unified, there must be something which perceives their unity, the existence of which would be no less mysterious than a personal identity. Hume solves this by considering substance as engendered by the togetherness of its properties.

Note in particular that, in Hume's view, these perceptions do not belong to anything. Hume, similar to the Buddha,[45] compares the soul to a commonwealth, which retains its identity not by virtue of some enduring core substance, but by being composed of many different, related, and yet constantly changing elements. The question of personal identity then becomes a matter of characterizing the loose cohesion[note 21] of one's personal experience.[note 22]

It is plain that in the course of our thinking, and in the constant revolution of our ideas, our imagination runs easily from one idea to any other that resembles it, and that this quality alone is to the fancy a sufficient bond and association. It is likewise evident that as the senses, in changing their objects, are necessitated to change them regularly, and take them as they lie contiguous to each other, the imagination must by long custom acquire the same method of thinking, and run along the parts of space and time in conceiving its objects.[44]

David Hume undertook looking at the mind–body problem. Hume also investigated a person's character, the relationship between human and animal nature, and the nature of agency. Hume pointed out that we tend to think that we are the same person we were five years ago. Though we've changed in many respects, the same person appears present as was present then. We might start thinking about which features can be changed without changing the underlying self. Hume, however, denies that there is a distinction between the various features of a person and the mysterious self that supposedly bears those features. When we start introspecting, "we are never intimately conscious of anything but a particular perception; man is a bundle or collection of different perceptions which succeed one another with an inconceivable rapidity and are in perpetual flux and movement".[43]

A Treatise Of Human Nature: Being An Attempt To Introduce The Experimental Method Of Reasoning Into Moral Subjects. For John Noon, 1739

The bundle theory of the self

[42][41][40][39][38][31].self-abandonment, theonymistic in circumstances which can summon, sometimes anti-[37][36]ego death of emotions and of the other attributes of the dynamics of a physical system to face the [35][34][33][32][31]

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