Novel-writing is a highly skilled and laborious trade. One does not just sit behind a screen jotting down other people's conversation. One has for one's raw material every single thing one has ever seen or heard or felt, and one has to go over that vast, smoldering rubbish-heap of experience, half stifled by fumes and dust, scraping and delving until one finds a few discarded valuables.

Daily Mail (May 31, 1930)