"Earnest in practicing the ordinary virtues, and careful in speaking about them, if, in his practice, he has anything def..."

"溫故而知新，可以為師矣。 Reviewing what you have learned and learning anew, you are fit to be a teacher...."

"唯上知與下愚不移 There are only the wise of the highest class, and the stupid of the lowest class, who cannot be..."