He then proceeds to argue that isolating languages have an advantage over all other forms in “the attainment of terseness and vividness;” that “the agglutinative languages are in advance of the inflectional in one important point, that, namely, of analyzing the sentence into its component parts, and distinguishing the relations of grammar one from another.... In fact, when we examine closely the principle upon which flection rests, we shall find that it implies an inferior logical faculty to that implied by agglutination.”[154] Elsewhere he says, “As for the primeval root-language, we have no proof that it ever existed, and to confound it with a modern isolating language is simply erroneous. Equally unproved is the belief that isolating languages develop into agglutinative, and agglutinative into inflectional. At all events, the continued existence of isolating tongues like the Chinese, or of agglutinative like the Magyar and Turkish, shows that the development is not a necessary one.”[155] I could quote other passages to the same effect; but the above are sufficient to show that we must not unreservedly accept the earlier doctrines previously sketched. There is, indeed, no question about the fact of language-growth as regards particular languages; the question here is as to the evolution of language-types one from another. And I have given prominence to this question in order to make the following remarks upon it. When we are told that “the continued existence of isolating tongues like the Chinese, or of agglutinative tongues like the Magyar and Turkish, shows that the development is not a necessary one,” we of course at once perceive the unquestionable truth of the statement. But the fact is without relevance to the only question in debate. The continued existence of the Protozoa unquestionably proves that their development into the Metazoa is not necessary; but this fact raises no presumption at all against the doctrine that all the Metazoa have been evolved from the Protozoa.