The Student. The Teacher. The Message
The student seeks information.
The good student seeks valuable information, and prepares for receiving it.
When prepared the teacher is provided.
The student must progress through the levels of learning, exerting themself and their teacher.
When the student completes his lessons, they have now progressed to being a teacher.
When the student becomes a teacher they still have further levels of learning to progress through.
These levels are specific to the student chosen by the teacher, hence the teacher must chose his student wisely.
As the teacher teaches their student the appropriate levels, they must also progress through the new levels they are adding to their knowledge which they learn from the process of teaching their student.
When the students level of learning catches up to the knowledge the teacher now possesses then the student has completed their student levels and now qualify to become a teacher themself.
This message passed down from teacher to student gets expound upon as it is taught to new generations, evolving with the environment around it.