Humanity and Justice have the Same Root

Humanity and Justice have the same root; due to where they are met, the names merely differs. A parent and child’s relation is called Humanity (The parent and the affectionate child both have Humanity). A lord and retainer’s relation is called Justice. This truth flows outward from a true heart.
The Third Year of Ansei, Twenty-second Day of March. “Minutes of the Head Lecturer.”

6日仁義同根
仁義同根にして、遇ふ所に因りて名を異にするのみ。父子には仁と云ひ、〈親と云ひ、慈孝と云ふ、皆仁なり〉君臣には義と云ふ、其の実は一心より流出する所なり。
安政三年三月二十二日「講孟箚記」