“The question “Why do we use language?” seems hardly to require an answer. But, as is often the way with linguistic questions, our everyday familiarity with speech and writing can make it difficult to appreciate the complexity of the skills, we have learned. This is particularly so when we try to define the range of functions to which language can be put.”
Source: The Cambridge Encyclopedia of the English Language, 1987, p. 10
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David Crystal 24
British linguist and writer 1941Related quotes
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General sources
Context: The art of the poem nowadays is something unstable; but at least the construction of the poem should make sense; you should know where you stand. Many questions haven't been answered as yet. Our poets may be wrong; but what can any of us do with his talent but try to develop his vision, so that through frequent failures we may learn better what we have missed in the past.

Speech to the Western Society of Engineers (18 September 1901); published in the Journal of the Western Society of Engineers (December 1901); republished with revisions by the author for the Annual Report of the Board of Regents of the Smithsonian Institution (1902) http://invention.psychology.msstate.edu/i/Wrights/library/Aeronautical.html
Context: The person who merely watches the flight of a bird gathers the impression that the bird has nothing to think of but the flapping of its wings. As a matter of fact this is a very small part of its mental labor. To even mention all the things the bird must constantly keep in mind in order to fly securely through the air would take a considerable part of the evening. If I take this piece of paper, and after placing it parallel with the ground, quickly let it fall, it will not settle steadily down as a staid, sensible piece of paper ought to do, but it insists on contravening every recognized rule of decorum, turning over and darting hither and thither in the most erratic manner, much after the style of an untrained horse. Yet this is the style of steed that men must learn to manage before flying can become an everyday sport. The bird has learned this art of equilibrium, and learned it so thoroughly that its skill is not apparent to our sight. We only learn to appreciate it when we try to imitate it.
“A belief is a question we have put aside so we can get on with what we believe we have to do.”
#100
Vectors: Aphorisms and Ten Second Essays (2001)

How does our having a soul make us special? Whatever answer you give, you could always say… “What’s so special about that?”
Debate: Is God Necessary for Morality? (2011)
Davidson, Donald. " A nice derangement of epitaphs http://www.hf.uio.no/csmn/english/research/news-and-events/events/davidson_derangement.pdf." Philosophical grounds of rationality: Intentions, categories, ends 4 (1986): 157.