8. Idea of identity suited to the idea it is applied to.
It is not therefore unity of substance that comprehends all sorts
of identity, or will determine it in every case; but to conceive and judge of it aright, we must consider what idea
the word it is applied to stands for: it being one thing to be the same substance, another the same man, and a third
the same person, if person, man, and substance, are three names standing for three different ideas;--for such as is
the idea belonging to that name, such must be the identity; which, if it had been a little more carefully attended to,
would possibly have prevented a great deal of that confusion which often occurs about this matter, with no small
seeming difficulties, especially concerning personal identity, which therefore we shall in the next place a little
consider.
