You.—As far as the practice of the present mode of speech
is concerned, the word you is a nominative form; since we say you move, you are moving, you were speaking.
Why should it not be treated as such? There is no absolute reason why it should not. All that can be said is, that the historical reason and the logical reason are at variance. The Anglo-Saxon form for you was eow, for ye, ge. Neither bear any sign of case at all, so that, form for form, they are equally and indifferently nominative and accusative, as the habit of language may make them. Hence, it, perhaps, is more logical to say that a certain form (you) is used either as a nominative or accusative, than to say that the accusative case is used instead of a nominative. It is clear that you can be used instead of ye only so far as it is nominative in power.
Ye.—As far as the evidence of such expressions as get on with ye is concerned, the word ye is an accusative form. The reasons why it should or should not be treated as such are involved in the previous paragraph.
Me.—Carrying out the views just laid down, and admitting you to be a nominative, or quasi-nominative case, we may extend the reasoning to the word me, and call it also a secondary nominative; inasmuch as such phrases as it is me=it is I are common.
Now to call such expressions incorrect English is to assume the point. No one says that c'est moi is bad French, and that c'est je is good. The fact is, that the whole question is a question of degree. Has or has not the custom been sufficiently prevalent to have transferred the forms me, ye, and you from one case to another, as it is admitted to have done with the forms him and whom, once dative, but now accusative?
Observe.—That the expression it is me=it is I will not justify the use of it is him, it is her=it is he and it is she. Me, ye, you, are what may be called indifferent forms, i. e. nominative as much as accusative, and accusative as much as nominative. Him and her, on the other hand, are not indifferent. The -m and -r are respectively the signs of cases other than the nominative.
Again: the reasons which allow the form you to be
considered as a nominative plural, on the strength of its being used for ye, will not allow it to be considered a nominative singular on the strength of its being used for thou. It is submitted to the reader, that in phrases like you are speaking, &c., even when applied to a single individual, the idea is really plural; in other words, that the courtesy consists in treating one person as more than one, and addressing him as such, rather than in using a plural form in a singular sense. It is certain that, grammatically considered, you=thou is a plural, since the verb with which it agrees is plural:—you are speaking, not you art speaking.