Rich can teach for a long time, and the book Shangshu was published. Rich as an enemy, can learn lessons and last for a long time.
I don't know who made this couplet, and it was widely circulated in the Qing Dynasty. Fang's genealogy in Zhenhai Mountain Villa reads: "When you read the motto, you will find a group of sixteen characters, which is meaningful and meaningful." Righteousness is wisdom first. Didn't say who.
I looked it up on the Internet, and there is this couplet in Cungeng Hall in Shanghang, Fujian Province, written by Song Xiang, a calligrapher in the Qing Dynasty and the top scholar in Guangdong Province. Shanghai Wendao Garden was written by Wu Xinzhong, the top scholar in the 13th year of Jiaqing in Qing Dynasty (1808). Lingshan in Guangxi was written by Feng, the suggestion of Emperor Jiaqing.