13.  All languages, however different, have many things in common.  There are points of a philosophical character, which result alike from the analysis of any language, and are founded on the very nature of human thought, and that of the sounds or other signs which are used to express it.  When such principles alone are taken as the subject of inquiry, and are treated, as they sometimes have been, without regard to any of the idioms of particular languages, they constitute what is called General, Philosophical, or Universal Grammar.  But to teach, with Lindley Murray and some others, that “Grammar may be considered as consisting of two species, Universal and Particular,” and that the latter merely “applies those general principles to a particular language,” is to adopt a twofold absurdity at the outset.[2] For every cultivated language has its particular grammar, in which whatsoever is universal, is necessarily included; but of which, universal or general principles form only a part, and that comparatively small.  We find therefore in grammar no “two species” of the same genus; nor is the science or art, as commonly defined and understood, susceptible of division into any proper and distinct sorts, except with reference to different languages—­as when we speak of Greek, Latin, French, or English grammar.

14.  There is, however, as I have suggested, a certain science or philosophy of language, which has been denominated Universal Grammar; being made up of those points only, in which many or all of the different languages preserved in books, are found to coincide.  All speculative minds are fond of generalization; and, in the vastness of the views which may thus be taken of grammar, such may find an entertainment which they never felt in merely learning to speak and write grammatically.  But the pleasure of such contemplations is not the earliest or the most important fruit of the study.  The first thing is, to know and understand the grammatical construction of our own language.  Many may profit by this acquisition, who extend not their inquiries to the analogies or the idioms of other tongues.  It is true, that every item of grammatical doctrine is the more worthy to be known and regarded, in proportion as it approaches to universality.  But the principles of all practical grammar, whether universal or particular, common or peculiar, must first be learned in their application to some one language, before they can be distinguished into such classes; and it is manifest, both from reason and from experience, that the youth of any nation not destitute of a good book for the purpose, may best acquire a knowledge of those principles, from the grammatical study of their native tongue.