If you are reading that and discovering Oliver Sacks for the first time, or just haven't read any of his books, may I recommend that you get a copy of Uncle Tungsten? It's wonderful memoir of growing up in London and a history of chemistry.
Not that I would consider myself a terrible person before reading it, but it made me aware of wrong ideas I had because I never gave them much thought because I did not need to think about them.
Basically the hearing equivalent of white or male privilege. Which kind of opened up the thoughts about other privileges I might have been unaware of.