The greatness of literature cannot be determined solely by literary standards though we must remember that whether it is literature or not can be determined only by literary standards.
If a novel reveals true and vivid relationships, it is a moral work, no matter what the relationships consist in. If the novelisthonours the relationship in itself, it will be a great novel.
Not only every great poet, but every genuine, but lesser poet, fulfils once for all some possibility of language, and so leaves one possibility less for his successors.