Honey

Acquiring knowledge from a book or a teacher?
The student said:
Teacher, why don't the books explain what you explain in that way?

The teacher began to say.
Look, baby bees make honey by taking food from flowers. If you've ever eaten that flower, tell me what it tastes like.
Student: Bitter or dull.
If you read books yourself, these are the tastes. He is the teacher who sucks the knowledge of all the books and makes you as sweet as honey, that is, useful.