— 289 —
The Name ties the Parts of the mixed Modes into one Idea.       §4. Every mixed Mode consisting of many distinct simple Ideas, it
seems reasonable to enquire, whence it has its Unity; and how such a
precise multitude comes to make but one Idea, since that Combin-
ation does not always exist together in Nature. To which I answer
it is plain, it has its Unity from an Act of the Mind combining those
several simple Ideas together, and considering them as one complex
one, consisting of those parts; and the mark of this Union, or that
which is looked on generally to compleat it, is one name given to
that Combination. For ’tis by their names, that Men commonly
regulate their account of their distinct Species of mixed Modes,
seldom allowing or considering any number of simple Ideas, to make
— 290 —
one complex one, but such Collections as there be names for. Thus,
though the killing of an old Man be as fit in Nature to be united into
one complex Idea, as the killing a Man’s Father; yet, there being no
name standing precisely for the one, as there is the name of Parricide
to mark the other, it is not taken for a particular complex Idea, nor
distinct Species of Actions, from that of killing a young Man, or
any other Man.
Locke Hum II, 22, §4, pp. 289-290