The young should be dutiful at home, modest abroad, careful and true, overflowing in kindness for all, but in brotherhood with love. And if they have strength to spare they should spend it on the arts.
Without goodness a man cannot endure adversity for long, nor can he enjoy prosperity for long. The good man is naturally at ease with goodness. The wise man cultivates goodness for its advantage.
To know, is to know that you know nothing. That is the meaning of true knowledge. When you say something, say what you know. When you don't know something, say you don't know. That is knowledge.
There are three things which the superior man guards against. In youth ... lust. When he is strong ... quarrelsomeness. When he is old ... covetousness.
Isn't it a pleasure to study and practice what you have learned? Isn't it also great when friends visit from distant places? If one remains not annoyed when he is not understood by people around him, isn't he a sage?
The master said, 'Quietly to store up knowledge in my mind, to learn without flagging, to teach without growing weary, these present me with no difficulties.'