He was aware also, without wishing in any way to examine this awareness, that his reluctance, or incapacity, to continue in this mode of writing was to do with some prohibition set on writing about his mother, with whom he shared his American domestic life and to whom he wrote, every day when he was abroad, long and affectionate letters. All of us have things in our lives which we know in this brief, useful allusive way, and neglect deliberately to explore.