An interesting essay on the equality of languages by Ross Perlin at Dissent Magazine:
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. . . words are a way of fending in the world: whole languages, like species, can disappear without dropping a gram of earth weight, and symbolic systems to a fare you well can be added without filling a ditch or thimble. . . .—A.R. Ammons
Modern linguistics is founded on a radical premise: the equality of all languages. “All languages have equal expressive power as communication systems,” writes Steven Pinker. “Every grammar is equally complex and logical and capable of producing an infinite set of sentences to express any thought one might wish to express,” says a recent textbook. “The outstanding fact about any language is its formal completeness,” wrote Edward Sapir, adding elsewhere for rhetorical effect: “When it comes to linguistic form, Plato walks with the Macedonian swineherd, Confucius with the head-hunting savage of Assam.”
Where native speakers are concerned, no language, dialect, or accent can meaningfully be described as primitive, broken, or inferior.