Anyhow, to the topic. There's an article by Marías, translated nicely into English, in Threepenny Review. Title: "Seven Reasons Not to Write Novels and Only One Reason to Write Them." [http://www.threepennyreview.com/samples/marias_su14.html]
My favorite line:
Writing novels allows the novelist to spend much of his time in a fictional world, which is really the only or at least the most bearable place to be. This means that he can live in the realm of what might have been and never was, and therefore in the land of what is still possible, of what will always be about to happen, what has not yet been dismissed as having happened already or because everyone knows it will never happen.