There is more danger of censure from the multiplicity than paucity of examples; authorities will sometimes seem to have been accumulated without necessity or use, and, perhaps, some will be found, which might, without loss, have been omitted. But a work of this kind is not hastily to be charged with superfluities: those quotations, which to careless or unskilful perusers appear only to repeat the same sense, will often exhibit, to a more accurate examiner, diversities of significations, or, at least, afford different shades of the same meaning: one will show the word applied to persons, another to things; one will express an ill, another a good, and a third a neutral sense; one will prove the expression genuine from an ancient author; another will show it elegant from a modern: a doubtful authority is corroborated by another of more credit; an ambiguous sentence is ascertained by a passage clear and determinate: the word, how often soever repeated, appears with new associates, and in different combinations, and every quotation contributes something to the stability or enlargement of the language. When words are used equivocally, I receive them in either sense; when they are metaphorical, I adopt them in their primitive acceptation.

I have sometimes, though rarely, yielded to the temptation of exhibiting a genealogy of sentiments, by showing how one author copied the thoughts and diction of another: such quotations are, indeed, little more than repetitions, which might justly be censured, did they not gratify the mind, by affording a kind of intellectual history.

The Works of Samuel Johnson in Nine Volumes — Part 33

The various syntactical structures occurring in the examples have been carefully noted; the license or negligence, with which many words have been hitherto used, has made our style capricious and indeterminate; when the different combinations of the same word are exhibited together, the preference is readily given to propriety, and I have often endeavoured to direct the choice.

The Works of Samuel Johnson in Nine Volumes — Part 33

Thus I have laboured, by settling the orthography, displaying the analogy, regulating the structures, and ascertaining the signification of English words, to perform all the parts of a faithful lexicographer: but I have not always executed my own scheme, or satisfied my own expectations. The work, whatever proofs of diligence and attention it may exhibit, is yet capable of many improvements: the orthography which I recommend is still controvertible; the etymology which I adopt is uncertain, and, perhaps, frequently erroneous; the explanations are sometimes too much contracted, and sometimes too much diffused; the significations are distinguished rather with subtilty than skill, and the attention is harassed with unnecessary minuteness.

The Works of Samuel Johnson in Nine Volumes — Part 33