SK Gaski quoted Equal Rites by Terry Pratchett (Discworld, #3)
They say that a little knowledge is a dangerous thing, but it’s not half so …
‘It must be quite interesting, reading books,’ said Esk. ‘Sort of. Can't you read, Esk?’ The astonishment in his voice stung her. 'I expect so,' she said defiantly. 'I've never tried.'
— Equal Rites by Terry Pratchett (Discworld, #3) (Page 170 - 171)