Malcolm Lowry's Under the Volcano:
The novel can be read simply as a story which you can skip if you want. It can be read as a story you will get more out of if you don't skip. It can be regarded as a kind of symphony, or in another way as a kind of opera--or even a horse opera. It is hot music, a poem, a song, a comedy, a farce, and so forth. It is superficial, profound, entertaining, and boring, according to taste. It is a prophecy, a political warning, a cryptogram, a preposterous movie.
- Malcolm Lowry to his publisher Jonathan Cape, January 2, 1946