He could talk well, but he was incapable of expressing himself in a literary way.
Here, the heart of Ruth and Martin’s differences is revealed. Ruth and her social class are preoccupied with aesthetics and technicalities, while Martin focuses more on functionality and meaning. Ruth is someone who hasn’t had the need to work hard, so everything she learns and does is conceptual. She went to school, for example, because it was “the right thing to do” – but how many of the educational notions she learned has she actually applied to real life? Martin, on the other hand, has known a life of working hard and yielding certain results. Working on the ships was not a “pretty” experience, but the results of the labor were tangible. Similarly, his writing may not be the most beautiful, but he is more concerned with the emotional response it retrieves. Ruth and Martin, like their respective social classes, assign value to different things, and this deep-rooted conflict cannot fully be resolved.
The upper class's detachment from "the real world" is very apparent as the novel progresses. Perhaps this is why Martin's experiences with the leprosy princess, the ships, and even fighting attracts Ruth. These are things she has faintly heard of but has never fully accepted as real. It is almost like the equivalent of meeting a celebrity - can such people actually exist? In this way, Martin's experiences are interpreted more as a form of entertainment and wonder than as genuine hardships that he went through as a working man. Her attraction to Martin seems almost condescending, and makes a mockery of the working class.