Begin at Home and With Yourself

There is no profit in becoming indignant in vain. Furthermore, matters under Heaven begin at home and with yourself.
The Fifth Year of Ansei, A Lucky Day of the New Year. “Appended to the notice by Lord Akinari of Mito”

19日天下の事は身家より始まる
徒らに憤るも益なし、且つ天下の事は身家より始まると。
安政五年正月吉日「水戸斉昭卿の壁書に跋す」

ie: First live righteously yourself, and put your own house in order, then you can worry about the rest of the world.