Stanford Encyclopedia of Philosophy

Notes to Identity Over Time

1. For a trenchant statement of the problem see Lewis 1986.

2. Here is one reason why this is only a rough way of drawing the distinction between intrinsic and extrinsic properties. It looks as though the property of existing in complete isolation, which Lewis calls loneliness, is extrinsic. Nevertheless being, in this sense, lonely is not only compatible with, but requires that nothing else exists.

3. Called a Deon-Theon case.

4. See Joseph Butler ‘Of Personal Identity’ and Thomas Reid ‘Of Mr. Locke's Account of Our Personal Identity’ in Perry 1975