By examining the old copies, I soon found that the later 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 authors 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 judgment of the first publishers, yet they who had the copy before their eyes were more likely to read it right, than we, who read it only 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.

Such criticism I have attempted to practise, and, where any passage appeared inextricably perplexed have endeavoured to discover how it may be recalled to sense, with least violence.  But my first labour is, always to turn the old text on every side, and try if there be any interstice, through which light can find its way; nor would Huetius himself condemn me, as refusing the trouble of research, for the ambition of alteration.  In this modest industry I have not been unsuccessful.  I have rescued many lines from the violations of temerity, and secured many scenes from the inroads of correction.  I have adopted the Roman sentiment, that it is more honourable to save a citizen than to kill an enemy, and have been more careful to protect than to attack.