To time I have been obliged to resign many passages, which, though I did not understand them, will perhaps hereafter be explained, having, I hope, illustrated some, which others have neglected or mistaken, sometimes by short remarks or marginal directions, such as every editor has added at his will, and often by comments more laborious than the matter will seem to deserve; but that which is most difficult is not always most important, and to an editor nothing is a trifle by which his authour is obscured.

The poetical beauties or defects I have not been very diligent to observe. Some plays have more, and some fewer judicial observations, not in proportion to their difference of merit, but because I gave this part of my design to chance and to caprice. The reader, I believe, is seldom pleased to find his opinion anticipated; it is natural to delight more in what we find or make, than in what we receive. Judgement, like other faculties, is improved by practice, and its advancement is hindered by submission to dictatorial decisions, as the memory grows torpid by the use of a table book. Some initiation is however necessary; of all skill, part is infused by precept, and part is obtained by habit; I have therefore shewn so much as may enable the candidate of criticism to discover the rest.

To the end of most plays, I have added short strictures, containing a general censure of faults, or praise of excellence; in which I know not how much I have concurred with the current opinion; but I have not, by any affectation of singularity, deviated from it. Nothing is minutely and particularly examined, and therefore it is to be supposed, that in the plays which are condemned there is much to be praised, and in these which are praised much to be condemned.

The part of criticism in which the whole succession of editors has laboured with the greatest diligence, which has occasioned the most arrogant ostentation, and excited the keenest acrimony, is the emendation of corrupted passages, to which the publick attention having been first drawn by the violence of contention between Pope and Theobald, has been continued by the persecution, which, with a kind of conspiracy, has been since raised against all the publishers of Shakespeare.

That many passages have passed in a state of depravation through all the editions is indubitably certain; of these the restoration is only to be attempted by collation of copies or sagacity of conjecture. The collator's province is safe and easy, the conjecturer's perilous and difficult. Yet as the greater part of the plays are extant only in one copy, the peril must not be avoided, nor the difficulty refused.

Of the readings which this emulation of amendment has hitherto produced, some from the labours of every publisher have advanced into the text; those are to be considered as in my opinion sufficiently supported; some I have rejected without mention, as evidently erroneous; some I have left in the notes without censure or approbation, as resting in equipoise between objection and defence; and some, which seemed specious but not right, I have inserted with a subsequent animadversion.

Having classed the observations of others, I was at last to try what I could substitute for their mistakes, and how I could supply their omissions. I collated such copies as I could procure, and wished for more, but have not found the collectors of these rarities very communicative. Of the editions which chance or kindness put into my hands I have given an enumeration, that I may not be blamed for neglecting what I had not the power to do.

By examining the old copies, I soon found that the late publishers, with all their boasts of diligence, suffered many passages; to stand unauthorised, and contented themselves with Rowe's regulation of the text, even where they knew it to be arbitrary, and with a little consideration might have found it to be wrong. Some of these alterations are only the ejection of a word for one that appeared to him more elegant or more intelligible. These corruptions I have often silently rectified; for the history of our language, and the true force of our words, can only be preserved, by keeping the text of authours free from adulteration. Others, and those very frequent, smoothed the cadence, or regulated the measure; on these I have not exercised the same rigour; if only a word was transposed, or a particle inserted or omitted, I have sometimes suffered the line to stand; for the inconstancy of the copies is such, as that some liberties may be easily permitted. But this practice I have not suffered to proceed far, having restored the primitive diction wherever it could for any reason be preferred.

The emendations, which comparison of copies supplied, I have inserted in the text; sometimes where the improvement was slight, without notice, and sometimes with an account of the reasons of the change.

Conjecture, though it be sometimes unavoidable, I have not wantonly nor licentiously indulged. It has been my settled principle, that the reading of the ancient books is probably true, and therefore is not to be disturbed for the sake of elegance, perspicuity, or mere improvement of the sense. For though much credit is not due to the fidelity, nor any to the judgement of the first publishers, yet they who had the copy before their eyes were more likely to read it right, than we who only read it by imagination. But it is evident that they have often made strange mistakes by ignorance or negligence, and that therefore something may be properly attempted by criticism, keeping the middle way between presumption and timidity.