思索义理，

涵养本原。

——《朱子语类》卷九

思索大义至理，

涵养内心的本源。

“One should explore and study the essentials of fundamental principles so that he can nourish and cultivate his mind.”

Vol. 9 of Classified Dialogues of Master Zhu by Zhu Xi

国家 画 Guo Jia