I have this tattooed on my left side! I love the saying and it's a perfect description of Karma, don't judge/discriminate and don't do to someone what you wouldn't want done to you.
PlatoAnd is it not true that in like manner a leader of the people who, getting control of a docile mob, does not withhold his hand from the shedding of tribal blood, but by the customary unjust accusations brings a citizen into court and assassinates him, blotting out a human life, and with unhallowed tongue and lips that have tasted kindred blood, banishes and slays and hints at the abolition of debts and the partition of lands.
Plato