This is the first Sacks book I've read, and seems like one of the less accessible ones to start with, but I still found it very fascinating and eye-opening. While I struggled to fully grasp some of the neurological and linguistic theories around deafness, the concept of deaf people as having a unique, totally different, and in many ways, superior culture and communication was something I had, unfortunately for me, never thought about or read about, and was endlessly interesting and revelatory. Written thirty years ago, I just wish there could have been an updated version, to see if some of the ideas had been proven/disproving, and how the advancement of ASL continued to progress in America.