'More than twenty-five years ago, I wrote an essay on the work of Oliver Sacks (Island Magazine, Autumn 1993). Entitled ‘Anthropologist of Mind’, it ranged across several of Sacks’s books; but it was Seeing Voices, published in 1989, that was the main impetus for the essay. In Seeing Voices, Sacks explored American deaf communities, past and present. He exposed the stringent and often punishing attempts to ‘normalise’ deaf people by forcing them to communicate orally, and he simultaneously deplored the denigration and widespread outlawing of sign language. Drawing on the work of Erving Goffman, Sacks showed how deaf people were stigmatised and marginalised from mainstream culture, and he revealed, contrary to prevailing opinion in the hearing world, the richness and complexities of American Sign Language.' (Introduction)