《笑林广记·腐流部》
乡下人说： 你只会看书，不懂得我们农家的事。菜如果不用粪浇，便成苦菜了。 
乡人曰： 相公只会读书，不晓我农家的事，菜若不用粪浇，便成苦菜矣。 
The villager said, “You only know how to read books. You don’t understand our farmers’ business. If these vegetables are not watered with excrement, they will become bitter.”