The Preface to Johnson's Dictionary, first published in 1755
Thus it happens, that in things difficult there is danger from ignorance, and in things easy from confidence; the mind, afraid of greatness, and disdainful of littleness, hastily withdraws herself from painful searches, and passes with scornful rapidity over tasks not adequate to her powers, sometimes too secure for caution, and again too anxious for vigorous effort; sometimes idle in a plain path, and sometimes distracted in labyrinths, and dissipated by different intentions.
A large work is difficult because it is large, even though all its parts might singly be performed with facility; where there are many things to be done, each must be allowed its share of time and labour, in the proportion only which it bears to the whole; nor can it be expected, that the stones which form the dome of a temple, should be squared and polished like the diamond of a ring.
Of the event of this work, for which, having laboured it with so much application, I cannot but have some degree of parental fondness, it is natural to form conjectures. Those who have been persuaded to think well of my design , require that it should fix our language, and put a stop to those alterations which time and chance have hitherto been suffered to make in it without opposition. With this consequence I will confess that I flattered myself for a while; but now begin to fear that I have indulged expectation which neither reason nor experience can justify. When we see men grow old and die at a certain time one after another, from century to century, we laugh at the elixir that promises to prolong life to a thousand years; and with equal justice may the lexicographer be derided, who being able to produce no example of a nation that has preserved their words and phrases from mutability, shall imagine that his dictionary can embalm his language, and secure it from corruption and decay, that it is in his power to change sublunary nature, or clear the world at once from folly, vanity, and affectation.
With this hope, however, academies have been instituted, to guard the avenues of their languages, to retain fugitives, and repulse intruders; but their vigilance and activity have hitherto been vain; sounds are too volatile and subtile for legal restraints; to enchain syllables, and to lash the wind, are equally the undertakings of pride, unwilling to measure its desires by its strength. The French language has visibly changed under the inspection of the academy; the stile of Amelot’s translation of father Paul is observed by Le Courayer to be un peu passé; and no Italian will maintain, that the diction of any modern writer is not perceptibly different from that of Boccace, Machiavel, or, Caro.
Total and sudden transformations of a language seldom happen; conquests and migrations are now very rare: but there are other causes of change, which, though slow in their operation, and invisible in their progress, are perhaps as much superiour to human resistance, as the revolutions of the sky, or intumescence of the tide. Commerce, however necessary, however lucrative, as it depraves the manners, corrupts the language; they that have frequent intercourse with strangers, to whom they endeavour to accommodate themselves, must in time learn a mingled dialect, like the jargon which serves the traffickers on the Mediterranean and Indian coasts. This will not always be confined to the exchange, the warehouse, or the port, but will be communicated by degrees to other ranks of the people, and be as last incorporated with the current speech.
There are likewise internal causes equally forcible. The language most likely to continue long without alteration, would be that of a nation raised a little, and but a little, above barbarity, secluded from strangers, and totally employed in procuring the conveniencies of life; wither without books, or, like some of the Mahometan countries, with very few: men thus busied and unlearned, having only such words as common use requires, would perhaps long continue to express the same notions by the same signs, But no such constancy can be expected in a people polished by arts, and classed by subordination, where one part of the community is sustained and accommodated by the labour of the other. Those who have much leisure to think, will always be enlarging the stock of ideas, and every increase of knowledge, whether real or fancied, will produce new words, or combinations of words. When the mind is unchained from necessity, it will range after convenience; when it is left at large in the fields of speculation, it will shift opinions; as any custom is disused, the words that expressed it must perish with it; as any opinion grows popular, it will innovate speech in the same proportion as it alters practice.
As by the cultivation of various sciences, a language is amplified, it will be more furnished with words deflected from their original sense; the geometrician will talk of a courtier’s zenith, or the excentrick virtue of a wild hero, and the physician of sanguine expectations and phlegmatick delays. Copiousness of speech will give opportunities to capricious choice, by which some words will be preferred, and others degraded; vicissitudes of fashion will enforce the use of new, or extend the signification of known terms. The tropes of poetry will make hourly encroachments, and the metaphorical will become the current sense: pronunciation will be varied by levity or ignorance, and the pen must at length comply with the tongue; illiterate writers will at one time or other by publick infatuation, rise into renown, who, not knowing the original import of words, will use them with colloquial licentiousness, confound distinction, and forget propriety. As politeness increases, some expressions will be considered as too gross and vulgar for the delicate, others as too formal and ceremonious for the gay and airy; new phrases are therefore adopted, which must, for the same reasons, be in time dismissed. Swift, in his petty treatise on the English language, allows that new words must sometimes be introduced, but proposes that none should be suffered to become obsolete. But what makes a word obsolete, more than general agreement to forbear it? and how shall it be continued, when it conveys an offensive idea, or recalled again into the mouths of mankind, when it has once by disuse become unfamiliar, and by unfamiliarity unpleasing.