原句 My mother is very like William Blake; she has visions and dreams and she cannot always distinguish a flea's head from a king. Luckily she can't paint. 谢谢!
note that william blake is the pioneer of romanticism. you can see his work has some symbolic meanings. So, in his ideology, there is no difference between flea's head and a king. beside, blake can draw but "my mother" cannot.