8. No culture or language is better than the other. Each has its beauty. Just appreciate it.
9. Interest or disinterest of a foreigner in a culture or language depends on the people practising it, their love, understanding and in their ability to be inclusive.
10. If there is a person in your group who never voices their opinion or escapes on some premise when there is an issue(need not be serious), beware of that person. They are what is called a 'silent killer'.
(I know, the 10th one may not be acceptable to many people, but then experience is the best teacher.)