Do to others as you would have them do to you.
The Bible, Luke 6:31
Is not reciprocity such a word [that can act as a rule for all life]? What you do not want done to yourself, do not do to others.
Confucius
What you hate to suffer, do not do to anyone else.
Isocrates
What is hateful to thyself do not unto thy neighbor.
The Talmud