"Do unto others as you would have them do unto you."
It's become a fairly trite way of checking people in social situations - from the elementary school classroom to corporations and beyond. The phrase creates an even playing ground for humanity and is seen by many as the common denominator of the world's major religions. Even Jesus said that on it hang all the law and the prophets - we'll get back to that.
Besides being so reductionist, tritely moralistic and pedantic, doesn't it often infer some degree of socialism or karma? If everyone treats everyone nicely, we'll all get along....If you put positive energy and effort into the world, it will come back. Or maybe a little pious fatalism? If you are as nice as you can be, at least you can rest knowing you've done your part no matter how someone else chooses to act.
The "Golden Rule" is found twice in the New Testament. It's more radical than the best of these. First look at Luke 6:31. The verse is at the center of the beatitudes which escalate in intense demand for self-emptying on behalf of God and others. Directly preceding our verse, it says "Whoever takes away what is yours, do not demand it back." Directly after verse 31 it says "If you love those who love you, what credit is that to you? For even sinners love those who love them."
So much for piety and karma. The way I picture it is literally turning your heart inside out. Everything that you would hope for from other people, give it freely - especially to the "ungrateful and evil." Give affirmation, affection, love, recognition, worth, gifts, tenderness, companionship, hugs, understanding, acceptance - let alone food, clothes, shelter. All the things you (I) would beg for and grope for to stuff into your heart - fling into the empty spaces in the world. Turn your heart inside out - let it be empty while you fill the ugly and undeserving world with love.
But what about me?? Will my heart always be empty? Not a bad question. look at the other occurrence of the Golden Rule in Matthew 7:12. It's at the end of a passage where Jesus is calling his disciples to pray, and he promises that the Heavenly Father will give every good gift - "
Therefore, how ever you want people to treat you, treat them, for this is the law and the prophets." Turn your heart inside out because God will fill it. You can tell him you feel empty - ask!, seek!, knock! - wait on the Lord to fill it with the things you desire, but don't wait to give them! Contrast this to the quasi-socialist zen that the Golden Rule has become.
Side note: Jesus also said that the culmination of the law and the prophets is to "love the Lord your God with all your soul, heart, mind and strength; and to love your neighbor as yourself." This must be synonymous with the Golden Rule - why don't we teach this to elementary school students and corporate executives?