Here is an extract from the diaries of John Steinbeck.
Lincoln’s Birthday. My first day of work in my new room. It is a very pleasant room and I have a drafting table to work on which I have always wanted – also a comfortable chair given me by Elaine [his wife]. In fact I have never had it so good and so comfortable. I have known such things to happen – the perfect pointed pencil – the paper persuasive – the fantastic chair and a good light and no writing. Surely a man is a most treacherous animal full of his treasured contradictions. He may not admit it but he loves his paradoxes.
Now that I have everything, we shall see whether I have anything. It is exactly that simple. Mark Twain used to write in bed – so did our greatest poet. But I wonder how often they wrote in bed – or whether they did it twice and the story took hold. Such things happen. Also I would like to know what things they wrote in bed and what things they wrote sitting up. All of this has to do with comfort in writing and what its value is. I should think that a comfortable body would let the mind go freely to its gathering. But such is the human that he might react in an opposite way. Remember my father’s story about the man who did not dare be comfortable because he went to sleep. That might be true of me too. Now I am perfectly comfortable in body. I think my house is in order. Elaine, my beloved, is taking care of all the outside details to allow me the amount of free untroubled time every day to do my work. I can’t think of anything else necessary to a writer except a story and the ability to tell it.