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Single Idea 1197

[filed under theme 16. Persons / D. Continuity of the Self / 2. Mental Continuity / c. Inadequacy of mental continuity ]

Full Idea

No thought, considered as at different times, can be the same, each part thereof having a different beginning of existence.

Gist of Idea

No two thoughts at different times can be the same, as they have different beginnings

Source

John Locke (Essay Conc Human Understanding (2nd Ed) [1694], 2.27.02)

Book Ref

Locke,John: 'Essay Concerning Human Understanding', ed/tr. Nidditch,P.H. [OUP 1979], p.329

A Reaction

cf Reid's objection (Idea 1368). Presumably there could be type-identity? If I have a thought which is identical to the thought I had yesterday, how do I tell whether it is the same token or merely the same type? It fails Locke's introspection test.

Related Idea

Idea 1368 Locke mistakes similarity of a memory to its original event for identity [Reid on Locke]

The 20 ideas with the same theme [criticisms the Self as continuity of consciousness]:

5513 Two persons might have qualitatively identical consciousnesses, so that isn't enough [Kant on Locke]
1345 Locke's move from substance to consciousness is a slippery slope [Butler on Locke]
6139 Locke implies that each thought has two thinkers - me, and 'my' substance [Merricks on Locke]
1197 No two thoughts at different times can be the same, as they have different beginnings [Locke]
1364 Locke confuses the test for personal identity with the thing itself [Reid on Locke]
12511 If consciousness is interrupted, and we forget our past selves, are we still the same thinking thing? [Locke]
1361 If identity is consciousness, could a person move between bodies or fragment into parts? [Reid on Locke]
21326 Locke's memory theory of identity confuses personal identity with the test for it [Reid on Locke]
1387 Butler thought Locke's theory was doomed once he rejected mental substance [Perry on Locke]
21314 Consciousness presupposes personal identity, so it cannot constitute it [Butler]
21312 Perceptions are distinct, so no connection between them can ever be discovered [Hume]
21321 Memory reveals my past identity - but so does testimony of other witnesses [Reid]
21324 If consciousness is transferable 20 persons can be 1; forgetting implies 1 can be 20 [Reid]
21325 Boy same as young man, young man same as old man, old man not boy, if forgotten! [Reid]
21327 If a stolen horse is identified by similitude, its identity is not therefore merely similitude [Reid]
1366 If consciousness is personal identity, it is continually changing [Reid]
21452 I can only determine my existence in time via external things [Kant]
5582 As balls communicate motion, so substances could communicate consciousness, but not retain identity [Kant]
5327 Temporal gaps in the consciousness of a spirit could not be bridged by memories [Ayer]
1396 We identify persons before identifying conscious states [Carruthers]