I’ve always been fascinated by the tension between prescriptivism and descriptivisim, so it was a surprise to discover the Preface to Johnson’s 1755 Dictionary only recently. I had difficulty choosing which part to quote, because the whole thing is so perfectly phrased in that poised but passionate 18th-century way. The whole text is well worth a read, and available on Project Gutenberg and on the British Library website.
“…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 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…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.” – from the Preface to Johnson’s Dictionary (1755)