— 465 —
Substances alone have proper Names.       §42. This is farther to be observed concerning Substances, that
they alone of all our several sorts of Ideas, have particular, or proper
Names, whereby one only particular Thing is signified. Because in
simple Ideas, Modes, and Relations, it seldom happens, that Men
have occasion to mention often this, or that particular, when it is
absent. Besides the greatest part of mixed Modes, being Actions,
which perish in their Birth, are not capable of a lasting Duration, as
Substances, which are the Actors; and wherein the simple Ideas that
make up the complex Ideas designed by the Name, have a lasting
Union.
Locke Hum III, 6, §42, p. 465