That which is excellent, may not be perfect; and amendment may be desirable, where subversion would be ruinous.

Believing that no theory can better explain the principles of our language, and no contrivance afford greater facilities to the student, the writer has in general adopted those doctrines which are already best known; and has contented himself with attempting little more than to supply the deficiencies of the system, and to free it from the reproach of being itself ungrammatical.

This indeed was task enough; for, to him, all the performances of his predecessors seemed meagre and greatly deficient, compared with what he thought needful to be done.

The scope of his labours has been, to define, dispose, and exemplify those doctrines anew; and, with a scrupulous regard to the best usage, to offer, on that authority, some further contributions to the stock of grammatical knowledge.
15.

Having devoted many years to studies of this nature, and being conversant with most of the grammatical treatises already published, the author conceived that the objects above referred to, might be better effected than they had been in any work within his knowledge.