 I know that in the ordinary way of speaking, the same Person, and the same Man, stand for one and the same thing. And indeed every one will always have a liberty to speak, as he pleases, and to apply what articulate Sounds to what Ideas he thinks fit, and change them as often as he pleases. But yet when we will enquire, what makes the same Spirit, Man, or Person, in our Minds; and having resolved with our selves what we mean by them, it will not be hard to determine, in either of them, or the like, when it is the same, and when not. (L-N 2.27.15)