The Satanic Bible (1969)
“The one rule that lies at the heart of every major religion is that we do unto others as we would have them do unto us.
Adhering to this law of love has always been the core struggle of human nature.”
2009, Nobel Prize acceptance speech (December 2009)
Variant: There is one rule that lies at the heart of every religion: that we do unto others as we would have them do unto us. This truth transcends nations and peoples
Context: The one rule that lies at the heart of every major religion is that we do unto others as we would have them do unto us.
Adhering to this law of love has always been the core struggle of human nature. For we are fallible. We make mistakes, and fall victim to the temptations of pride, and power, and sometimes evil. Even those of us with the best of intentions will at times fail to right the wrongs before us.
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Barack Obama 1158
44th President of the United States of America 1961Related quotes
Individualism and Socialism (1933)
Context: Was Tolstoy justified in interpreting the Sermon on the Mount in anarchistic terms? The answer cannot be found in isolated texts or combinations thereof, but rather in consideration of the basic elements which together constitute the religion of Jesus.... The Golden Rule of conduct was phrased in terms of mutuality: "do unto others as you would have them do unto you." The true criterion of every thought and deed must, therefore, be found in its effects upon human personality, human relations, and communion between man and God.

Interview on WCIU (4 May 2011) http://www.youtube.com/watch?v=Ns735UPlxKM/.
Source: Why Men Love Bitches: From Doormat to Dreamgirl—A Woman's Guide to Holding Her Own in a Relationship

2010s, Liberty University Speech (14 September 2015)
huffingtonpost.com http://www.huffingtonpost.com/rev-peter-m-wallace/unlikely-saints-stan-lee_b_669290.html

… The twenty-five percent is for error.
Pauling's reply to an audience question about his ethical system, following his lecture circa 1961 at Monterey Peninsula College, in Monterey, California.
1990s