the
terms they employ to define their meaning, if indeed, meaning they have.
What is meant by an "_in_-definite article," a _dis_-junctive
_con_-junction, an _ad_-verb which qualifies an _adjective_, and
"sometimes another _ad_-verb?" Such "parts of speech" have no existence
in fact, and their adoption in rules of grammar, have been found
exceedingly mischievous and perplexing. "Adverbs and conjunctions," and
"_adverbial_ phrases," and "conjunctive expressions," may serve as
common sewers for a large and most useful class of words, which the
teachers of grammar and lexicographers have been unable to explain; but
learners will gain little information by being told that such is an
_adverbial phrase_, and such, a _conjunctive expression_. This is an
easy method, I confess, a sort of wholesale traffic, in parsing
(_passing_) language, and may serve to cloak the ignorance of the
teachers and makers of grammars. But it will reflect little light on the
principles of language, or prove very efficient helps to "speak or write
with propriety." Those who _think_, will demand the _meaning_ of these
words, and the reason of their use. When that is ascertained, little
difficulty will be found in giving them a place in the company of
respectable words. But I am digressing. More shall be said upon this
point in a future lecture, and in its proper place.

I was endeavoring to establish the position that all language depends
upon permanent principles; that words are the signs of ideas, and ideas
are the impressions of things communicated to the mind thro the medium
of some one of the five senses. I think I have succeeded so far as
simple material things are concerned, to the satisfaction of all who
have heard me. It may, perhaps, be more difficult for me to explain the
words employed to express complex ideas, and things of immateriality,
such as mind, and its attributes. But the rules previously adopted will,
I apprehend, apply with equal ease and correctness in this case; and we
shall have cause to admire the simple yet sublime foundation upon which
the whole superstructure of language is based.

In pursuing this investigation I shall endeavor to avoid all abstruse
and metaphysical reasoning, present no wild conjectures, or vain
hypotheses; but confine myself to plain, common place matter of fact. We
have reason to rejoice that a wonderful improvement in the science and
cultivation of the mind has taken place in these last days; that w