Susan SchallerSusan Schaller is a teacher of American Sign Language affiliated with the World Federation of the Deaf and the founder of In the Name of Deaf Adults (NaDA).

Oliver Sacks is a physician, best-selling author and professor of nerology and psychiatry at Columbia University Medical Center. He has written ten books, including The Man Who Mistook His Wife for a Hat and Musicophilia: Tales of Music and the Brain. Read More Read Less