Stephen Henderson

“Speech has only one dimension—its extension in time; writing has two dimensions; models have three; but only signed languages have at their disposal four dimensions—the three spatial dimensions accessible to a signer’s body, as well as the dimension of time. And Sign fully exploits the syntactic possibilities in its four-dimensional channel of expression.”
― Oliver Sacks, Seeing Voices

“This innate structure, this latent structure, is not fully developed at birth, nor is it too obvious at the age of eighteen months. But then, suddenly, and in the most dramatic way, the developing child becomes open to language, becomes able to construct a grammar from the utterances of his parents. He shows a spectacular ability, a genius for language, between the ages of twenty-one and thirty-six months”
― Oliver Sacks, Seeing Voices

“Trace the contours of your face with a soapy finger on the bathroom mirror (it is easily done by closing one eye). There is a shock waiting: the image which looked life-size has shrunk to half-size, like a headhunter's trophy. A person walking away does not seem to become a dwarf -- as he should; a black glove looks just as black in the sunlight as in shadow -- though it should not;”
― Arthur Koestler, The Act of Creation

“I was struck by the graphic quality, the fullness of her descriptions. Her parents spoke too of this fullness: “All the characters or creatures or objects Charlotte talks about are placed,” her mother said; “spatial reference is essential to ASL. When Charlotte signs, the whole scene is set up; you can see where everyone or everything is; it is all visualized with a detail that would be rare for the hearing.” This placing of objects and people in specific locations, this use of elaborate, spatial reference had been striking in Charlotte, her parents said, since the age of four and a half—already at that age she had gone beyond them, shown a sort of “staging” power, an “architectural” power that they had seen in other deaf people—but rarely in the hearing.”
― Oliver Sacks, Seeing Voices