Friend

In our whole life, we need friends. The meaning of friends is that we know each other and can call out each name.
But, this is the friends in the beginning. The real friends are those who can see each other from time to time and know each well.
There are two kinds of friends. One is in business, one private, such as classmates and colleagues, etc.
Business friendship can only continue when there is business relationship. When business is no more, friendship stops.
Private friendship can last longer. It is because they know each other more long time, even in family, too.
Even so, we cannot have many friends due to limit of our time. Otherwise our life will be much wasted if we have too many unnecessary friends.
A tabloid newspaper says that an American old woman wished to find a friend, but not human, just a dog to sit together with her.