Grammar is the right method of expressing the ideas of things by signs
and sounds adapted for the sensation of the eye and ear, according to
their hieroglyfic nature, forms, and modes, and that εντελεχεια or
intelligent echo, with which man was originally endued by his Creator.
It consists of three parts or sorts of names, viz. letters, considered as
characters or the figures of things, and as signs of articulate sounds;
their combination into particles and nouns; and their construction into
phrases, propositions, and sentences. And, according to the present state
of languages, etymology may be admitted as a fourth division of grammar.