Schoolmaster, stick to your books; farmer, to your pigs

Similar sayings:

Scholars talk books, butchers talk pigs Scholars talk books, butchers talk pigs
A wicked book cannot repent A wicked book cannot repent
A book holds a house of gold A book holds a house of gold
It is better to be entirely without a book than to believe it entirely It is better to be entirely without a book than to believe it entirely
A closed mind is like a closed book; just a block of wood A closed mind is like a closed book; just a block of wood

Chinese sayings and proverbs