instance, “It is day;” but dialect is a peculiar style imprinted on the utterance of nations, according to their race; and causes varieties in the Greek language, being a sort of local habit, as for instance, the Attics say θάλαττα, and the Ionians say ἡμέρη. The elements of words are the twenty-four letters; and the word letter is used in a triple division of sense, meaning the element itself, the graphical sign of the element, and the name, as Alpha. There are seven vowels, α, ε, η, ι, ο, υ, ω; six mutes, β, γ, δ, κ, π, τ. But voice is different from a word, because voice is a sound; but a word is an articulate sound. And a word differs from a sentence, because a sentence is always significative of something, but a word by itself has no signification, as for instance, βλίτρι. But this is not the case with a sentence. Again, there is a difference between speaking and pronouncing; the sounds are pronounced, but what are spoken are things which are capable of being spoken of.
XXXIX. Now of sentences there are five parts, as Diogenes tells us in his treatise on Voice; and he is followed by Chrysippus. There is the noun, the common noun, the verb, the conjunction, and the article. Antipater adds also quality, in his treatise upon Words and the things expressed by them. And a common noun (προσηγορία) is, according to Diogenes, a part of a sentence signifying a common quality, as for instance, man, horse. But a noun is a part of a sentence signifying a peculiar quality, such as Diogenes, Socrates. A verb is a part of a sentence signifying an uncombined categorem, as Diogenes (ὁ Διογένης) or, as others define it, an element of a sentence, devoid of case, signifying something compound in reference to some person or persons, as, “I write,” “I say.” A conjunction is a part of a sentence destitute of case, uniting the divisions of