In the form of expression, it can be divided into monologue and dialogue. Among them, drama is the art of dialogue, and poetry and novels are the art of monologues.
The difference between poetry and fiction is that poetry is a pure monologue, while fiction is an impure monologue.
Poetry focuses on psychological events, is the reflection of various emotions of these events, is the monologue of the lyric hero, is a kind of pouring out and venting, and there is no receiver.
A novel must rely on a narrator, and its form of expression is a kind of talk. Without a listener, the novel can't be carried out effectively. Therefore, in this sense, the novel is not a pure monologue, but a narrative prose between poetry and novel.