Errors, like Straws, upon the Surface flow;
  He who would search for Pearls must dive below. [3]

A true Critick ought to dwell rather upon Excellencies than Imperfections, to discover the concealed Beauties of a Writer, and communicate to the World such things as are worth their Observation.  The most exquisite Words and finest Strokes of an Author are those which very often appear the most doubtful and exceptionable to a Man who wants a Relish for polite Learning; and they are these, which a sower undistinguishing Critick generally attacks with the greatest Violence.  Tully observes, that it is very easie to brand or fix a Mark upon what he calls Verbum ardens, [4] or, as it may be rendered into English, a glowing bold Expression, and to turn it into Ridicule by a cold ill-natured Criticism.  A little Wit is equally capable of exposing a Beauty, and of aggravating a Fault; and though such a Treatment of an Author naturally produces Indignation in the Mind of an understanding Reader, it has however its Effect among the Generality of those whose Hands it falls into, the Rabble of Mankind being very apt to think that every thing which is laughed at with any Mixture of Wit, is ridiculous in it self.

Such a Mirth as this is always unseasonable in a Critick, as it rather prejudices the Reader than convinces him, and is capable of making a Beauty, as well as a Blemish, the Subject of Derision.  A Man, who cannot write with Wit on a proper Subject, is dull and stupid, but one who shews it in an improper Place, is as impertinent and absurd.  Besides, a Man who has the Gift of Ridicule is apt to find Fault with any thing that gives him an Opportunity of exerting his beloved Talent, and very often censures a Passage, not because there is any Fault in it, but because he can be merry upon it.  Such kinds of Pleasantry are very unfair and disingenuous in Works of Criticism, in which the greatest Masters, both Ancient and Modern, have always appeared with a serious and instructive Air.

As I intend in my next Paper to shew the Defects in Milton’s Paradise Lost, I thought fit to premise these few Particulars, to the End that the Reader may know I enter upon it, as on a very ungrateful Work, and that I shall just point at the Imperfections, without endeavouring to enflame them with Ridicule.  I must also observe with Longinus, [5] that the Productions of a great Genius, with many Lapses and Inadvertencies, are infinitely preferable to the Works of an inferior kind of Author, which are scrupulously exact and conformable to all the Rules of correct Writing.