It appears to have been written with the sole view (or nearly with the sole view) of exciting inquiry and comment. That this object should be fully accomplished cannot be thought very wonderful, when we consider the excessive trouble taken to accomplish it, by vivid and powerful intellect. That the _Doctor_ is the offspring of such intellect, is proved sufficiently by many passages of the book, where the writer appears to have been led off from his main design. That it is written by more than one man should not be deduced either from the apparent immensity of its erudition, or from discrepancies of style. That man is a desperate mannerist who cannot vary his style _ad infinitum_; and although the book _may_ have been written by a number of learned _bibliophagi_, still there is, we think, nothing to be found in the book itself at variance with the possibility of its being written by any one individual of even mediocre reading. Erudition is only certainly known in its _total_ results. The mere grouping together of mottoes from the greatest multiplicity of the rarest works, or even the apparently natural inweaving into any composition, of the sentiments and manner of these works, are attainments within the reach of any well-informed, ingenious and industrious man having access to the great libraries of London. Moreover, while a single individual possessing these requisites and opportunities, might through a rabid desire of _creating a sensation_, have written, with some trouble, the Doctor, it is by no means easy to imagine that a plurality of sensible persons could be found willing to embark in such absurdity from a similar, or indeed from any imaginable inducement.