Thought, unassisted by learning, is dangerous.

Without knowing the force of words, it is impossible to know more.

Reviewing what you have learned and learning anew, you are fit to be a teacher.

There are three friendships which are advantageous, and three which are injurious. Friendship with the upright; friendship with the sincere; and friendship with the man of much observation: these are advantageous. Friendship with the man of specious airs; friendship with the insinuatingly soft; and friendship with the glib-tongued: these are injurious.

The Master said of Gong Yechang, “He is marriageable. Although he was once imprisoned and branded as a criminal, he was in fact innocent of any crime.” The Master gave him his daughter in marriage. (Analects 5.1)

Never give a sword to a man who can't dance.

A gentleman can withstand hardships; it is only the small man who, when submitted to them, is swept off his feet.