This is not the appropriate place for quoting the confirmations of this fact which run through the whole history of humanity. What is certain is that from the most ancient times the dictate of conscience has guided every human subject towards an objective moral norm which finds concrete expression in respect for the other person and in the principle of not doing to that person what one would not wish done to oneself (41).
[41] "The moral law", Confucius says, "is not distant from us... The wise man does not make many mistakes regarding the moral law. He has as his principle: do not do to others what you would not wish done to you" (Chung Yung: Equilibrium and Norm, 13). A Japanese master of ancient times (Dengyo Daishi, also called Saicho, who lived 767-822 A.D.) urges people to be "forgetful of self, doers of good to others: this represents the summit of friendship and compassion" (cf. W.T. De Bary, Sources of Japanese Tradition, New York 1958, Vol I, p. 127). Nor can one fail to mention Mahatma Gandhi, who taught the "power of truth" (satyagraha), which conquers without violence by the dynamism intrinsic to just action.
[Pope John Paul II, Dilecti Amici n.7]