But the chief fault
lies with our teachers, in that they love to keep back
the pupils they have managed to lay their hands on,
partly from the desire to draw their miserable fees
for as long as possible, partly out of ostentation, to
enhance the difficulty of acquiring the knowledge
which they promise to impart, and to some extent
owing to their ignorance or carelessness in teaching.
The next most serious fault lies in ourselves, who
think it better to linger over what we have learned
than to learn what we do not yet know.