5. In applying the names of actions to the proper subjects of them, there are three Modes of the action, one or other of which is always implied. The first is, when the action has no reference to any thing previously spoken of. The second is, when it has a reference to something previously spoken of. The third is, when it has a reference to some state of the will of {155} the speaker or person spoken of. These diversities of mode are connoted by the Moods of the verb. The Indicative is used when no reference is made to any thing which precedes: the Subjunctive, when a reference is made to something which precedes: and the Optative, and Imperative, when the reference is to the state of the will of the speaker or the person spoken of. Such are the contrivances to make the marks or names of action, by their connotative powers, a more and more effectual instrument of notation. Accurately speaking, they are adjectives, so fashioned as to connote, a threefold distinction of agents, with a twofold distinction of their number, a threefold distinction of the manner of the action, and a threefold distinction of its time; and, along with all this another important particular, about to be explained, namely, the COPULA in PREDICATION.[47] [Editor's footnote 47: The imperfection of this theory of Verbs is sufficiently apparent. They are, says the author, a particular kind of Adjectives. Adjectives, according to the preceding Section, are words employed to enable us, without inconvenient multiplication of names, to subdivide great classes into smaller ones. Can it be said, or would it have been said by the author, that the only, or the principal reason for having Verbs, is to enable us to subdivide classes of objects with the greatest economy of names?