Variant translation by Lin Yutang: "He who knows others is learned; he who knows himself is wise".
Source: Tao Te Ching, Ch. 33, as interpreted by Stephen Mitchell (1992)
“Knowing others is wisdom, knowing yourself is Enlightenment.”
Source: Rahel Varnhagen: The Life of a Jewess
The Canton, Ohio Speech, Anti-War Speech (1918)
Context: And now for all of us to do our duty! The clarion call is ringing in our ears and we cannot falter without being convicted of treason to ourselves and to our great cause.
Do not worry over the charge of treason to your masters, but be concerned about the treason that involves yourselves. Be true to yourself and you cannot be a traitor to any good cause on earth.
Yes, in good time we are going to sweep into power in this nation and throughout the world. We are going to destroy all enslaving and degrading capitalist institutions and re-create them as free and humanizing institutions. The world is daily changing before our eyes. The sun of capitalism is setting; the sun of socialism is rising. It is our duty to build the new nation and the free republic.
“Trusting yourself means living out what you already know to be true.”
Source: Tiny Beautiful Things: Advice on Love and Life from Dear Sugar
“Knowing yourself is the beginning of all wisdom.”
Source: Masks of the Illuminati
As quoted in "Living legend: Ba Jin" in News Guangdong (26 November 2003)
Source: Abba's Child: The Cry of the Heart for Intimate Belonging
