The ancient fashion of learning from teachers has not spread for a long time, and it is difficult for people to have no doubts!
Therefore, no matter how high or low, no matter how old or young, where the truth exists, is where the teacher is.
Ordinary people nowadays, who are less intelligent than talented people, are ashamed to learn from their teachers.
In ancient times, the talented people, whose wisdom was beyond ordinary people, had to follow their teachers for advice.
Doubts can not be solved but do not want to ask the teacher is the stupidest way to learn, in the long run, the results can not progress, I did not see his wisdom.