To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.
Arthur Conan DoyleSir Walter, with his 61 years of life, although he never wrote a novel until he was over 40, had, fortunately for the world, a longer working career than most of his brethren.
Arthur Conan DoyleMy life is spent in one long effort to escape from the commonplaces of existence. These little problems help me to do so.
Arthur Conan Doyle