The biblical teaching that one should behave toward others as one would have others behave toward oneself.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "golden rule" in a sentence
"Modern art he felt should be an interpretation and not a representment of reality, and he taught the golden rule of the artist that the half is usually more expressive than the whole."
"Jules Parroquet, whose golden rule for the exploitation of a successful restaurant and night club was simple — a new name and orchestra to every two changes of paint — already considered it one of his triumphs."
"The point is that I've made capital out of my dishonour-able scars by adhering to one golden rule - Flashy's Sufferance, I call it: always convey, but never say, that your injury is a sight worse than it really is."