At the bedrock of our politics will be a total allegiance to the United States of America, and through our loyalty to our country, we will rediscover our loyalty to each other.
Traditions will be formed and the mid-autumn festival would come to be known as a symbol of family reunion where loved ones gather together to share moon cakes, hang up lanterns and admire the full moon in the night sky.
The alliances are most valuable when scientists and artists have a shared stake in a project, are able to jointly design it and can critique each other's work.
The third sentence is informal; it shows that you and the person you are speaking to are familiar with each other, and you don't need to make an effort to be polite or respectful.