Vertigo, it was thought at the time, could only be caused by a disease of the cerebellum. He observed this kind of patient for years and saw absolutely no symptoms of brain disease.
“When Kate was born, she was born into a world of joy and happiness and confidence. The difference between the children is night and day. She's happy, she's thriving, she's full of self-confidence. I tell her she's beautiful every day before I send her off to school.”