Since consciousness always accompanies thinking, and it is that that makes every one to be what he calls self, and thereby distinguishes himself from all other thinking beings, in this alone consists personal identity, i.e. the sameness of a rational being.
The identity of the same man consists in nothing but a participation of the same continued life by constantly fleeting particles of matter in succession vitally united to the same organized body.
I cannot remember a thing that happened a year ago, without a conviction, as strong as memory can give, that I, the same identical person who now remember that event, did then exist.