‘This old lady, in her nineties, but sharp as a pin, would sometimes fall into a peaceful reverie. As she did so, she might have seemed to be knitting, her hands in constant complex motion. But her daughter, also a signer, told me she was not knitting but thinking to herself, thinking in Sign. And even in her sleep, I was further informed, the old lady might sketch fragmentary signs on the couterpane. She was dreaming in sign.

Sacks (1989)’

– Yule, G. 1985. The Study of Language Cambridge, United Kingdom: Cambridge University Press (2010) p. 198