Society functions at its very best when each member finds security in their place in the social structure. When all members can be gainfully employed, yet have individual initiative, when they can excel in their own craft and find satisfaction in their work contributing to the overall goals of society, then there exists harmony and a sense of community. When members have an interest in the continuity of their community, great deeds can be accomplished. This is because the many work for the One.
If you maintain a feeling of compassion, loving kindness, then something automatically opens your inner door. Through that, you can communicate more easily with other people. And that feeling of warmth creates a kind of openness. You'll find that all human beings are just like you, so you'll be able to relate to them more easily. That gives you a spirit of friendship.