Churchill was amazing in his output and the quality of his thought. It's difficult to contemplate the level of his output in context of how busy he was with politics and his other pursuits. I don't think he slept much. I recall reading somewhere that he habitually cat-napped through the night. He would bounce awake at any hour and require his aides to get up as well. They don't make 'em like they used to, and they don't write 'em like they used to as well.