Imperial Collection of Master Zhu’s Complete Works 《御纂朱子全書》 : Volume Two (卷二) : Learning Part Two (學二) : Preserving Cultivation - Maintaining Seriousness - Quietude (存養 持敬 靜)
Since ancient times, sages and virtuous people, each and all, have regarded the mind’s moral nature as the root.
Preserving Cultivation
《以下論存養》
The ancients said that aspiration leads the mind. You, as the sovereign, need the mind to have a standpoint, to begin to own the mind. If this is not accumulated, the whole body will then not have anyplace to govern toward. [2.5]