“During the later part of the 19th century, it was believed that a sound of change affected the whole of a language simultaneously: one sound system would smoothly develop into the next, and all words which contained a particular sound would be affected in the same way.”
Source: How Language Works, 2007, p. 359
Help us to complete the source, original and additional information
David Crystal 24
British linguist and writer 1941Related quotes

Silence Is the Universal Library http://www.poetrysoup.com/famous/poem/21396/Silence_Is_the_Universal_Library_
From the poems written in English

Introduction, p. xxiv
The Intelligent Investor: The Classic Text on Value Investing (1949)

On Ken Kesey, in Ch. I : Black Shiny FBI Shoes
The Electric Kool-Aid Acid Test (1968)
Context: He talks in a soft voice with a country accent, almost a pure country accent, only crackling and rasping and cheese-grated over the two-foot hookup, talking about —
"—there's been no creativity," he is saying, "and I think my value has been to help create the next step. I don't think there will be any movement off the drug scene until there is something else to move to —"
— all in a plain country accent about something — well, to be frank, I didn't know what in the hell it was all about. Sometimes he spoke cryptically, in aphorisms. I told him I had heard he didn't intend to do any more writing. Why? I said.
"I'd rather be a lightning rod than a seismograph," he said.
He talked about something called the Acid Test and forms of expression in which there would be no separation between himself and the audience. It would be all one experience, with all the senses opened wide, words, music, lights, sounds, touch —
lightning.

Poetry and the World, Ecco Press,1988

Source: Kavanagh: A Tale (1849), Chapter 13.
Context: Ah, how wonderful is the advent of spring! — the great annual miracle of the blossoming of Aaron's rod, repeated on myriads and myriads of branches! — the gentle progression and growth of herbs, flowers, trees, — gentle and yet irrepressible, — which no force can stay, no violence restrain, like love, that wins its way and cannot be withstood by any human power, because itself is divine power. If spring came but once in a century, instead of once a year, or burst forth with the sound of an earthquake, and not in silence, what wonder and expectation there would be in all hearts to behold the miraculous change! But now the silent succession suggests nothing but necessity. To most men only the cessation of the miracle would be miraculous and the perpetual exercise of God's power seems less wonderful than its withdrawal would be.

Ivo Pogorelić about the most important things Aliza Kezeradze taught him, Die Zeit, Ich möchte gern mein Publikum sein, Hans Josef, Herbort, May 15, 1981, June 30, 2015 http://www.zeit.de/1981/21/ich-moechte-gern-mein-publikum-sein, (in German language)

Similarly, in the matter of language, one can separate neither sound from thought nor thought from sound; such separation could be achieved only by abstraction, which would lead either to pure psychology, or to pure phonology.
Source: Cours de linguistique générale (1916), p. 157; as cited in: Schaff (1962:11)