The scientific world of the time was in the midst of a terrible ferment, with discoveries and realizations coming at an unseemly rate. To many in the ranks of the conservative and the devout, the new theories of geology and biology were delivering a series of hammer blows to mankind's self-regard. Geologists in particular seemed to have gone berserk, to have thrown off all sense of proper obeisance to their Maker... Mankind, it seemed, was now suddenly rather – dare one say it? – insignificant. He may not have been, as he had eternally supposed, specially created.

No critic and advocate of immutability has ever once managed properly or even marginally to outwit the English language's capacity for foxy and relentlessly slippery flexibility. For English is a language that simply cannot be fixed, not can its use ever be absolutely laid down. It changes constantly; it grows with an almost exponential joy. It evolves eternally; its words alter their senses and their meanings subtly, slowly, or speedily according to fashion and need.

And after that, and also for each word, there should be sentences that show the twists and turns of meanings—the way almost every word slips in its silvery, fishlike way, weaving this way and that, adding subtleties of nuance to itself, and then perhaps shedding them as public mood dictates.