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.

Nobel Prize acceptance speech (December 2009)