It is very important to understand that people are not selfish naturally. Culture has trained them to be selfish. People are not in their natural state; from the moment they ate born they are influenced by a society where very wealthy, powerful people want everyone greedy, so they will care about money and status more than they care about people. They want them to buy things, and pay taxes, and fight with each other, because this is how these bad, powerful people get wealth and power.
We must understand this, and not play this game. We must help others to understand. Truth is what matters most. Knowledge and understanding will set us free, and loyalty will come naturally when people grow in Truth.