Question: You always talk about good relations between people. What is a good relationship? Things that are good for one person are evil for another. Where is the measure, the standard, with which every inhabitant of the planet could relate to?
Answer: The standard is that everyone should think about the benefit of others. Not what I consider to be good, but what others mean by good.
There is no way out, you need to learn this. And we will have to study it because we must reach the state of an integrated society.
From KabTV’s “Fundamentals of Kabbalah,” 4/12/20