If a novel is written in a certain language with certain characters from a particular community and the story is very good or illuminating, then that work is translated into the language of another community - then they begin to see through their language that the problems described there are the same as the problems they are having. They can identify with characters from another language group.
Ngugi wa Thiong'oYou get another person who operates only in an African language and there are many persons who operate only in African languages; he or she is excluded from all the goodies that come with English. And even in terms of justice, law codes, the legal system. A person who does not know English in Africa is excluded from that system because he can only operate through acts of translation.
Ngugi wa Thiong'o