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

It is better to be entirely without a book than to believe it entirely

Many books do not use up words; many words do not use up thoughts

A wicked book cannot repent

Unplowed fields make hollow bellies; unread books make hollow minds

A closed mind is like a closed book; just a block of wood

A book holds a house of gold

Scholars talk books, butchers talk pigs