Susan Hill presents Radio 4's good books programme.
'Dr P left his shoe on the floor and tried to lace up his foot. He was suffering from a strange visual blankness.'
Neurologist Dr Oliver Sacks discusses the case-histories of his patients in his latest book and reveals why his studies are received as literary works. Richard Holmes follows in Robert Louis Stevenson 's footsteps.
Producer ANGELA HIND
(Re-broadcast next Sunday)