If a man in the morning hear the right way, he may die in the evening without regret.
You can successfully force people to follow a certain course, but you cannot force them to understand it.
Be loyal and trustworthy. Do not befriend anyone who is lower than yourself in this regard.
Reviewing what you have learned and learning anew, you are fit to be a teacher.
Waste begets self-will; thrift begets meanness: but better be mean than self-willed.
Teachers open the door ... you enter by yourself.