Buddhism: Treasure Relationships With Those That Are Closest
The people we are close to are important. We should treat them as our treasures. When dealing with others, we should always be sincere and polite. Nothing is stronger than sincerity.
I have made many friends around the world and made them all with the same sincerity. A relationship built with never be destroyed, but relationships built by means tactics and scheming always collapse in the end.
(Credit Daisaku Ikeda for the philosophy)