Describe symbolism in The Razor's Edge by W. Somerset Maugham

One recurring theme in the novel is physical beauty.... the way different people become more or less attractive based on their circumstances. As an example, when Maugham sees Larry shaven and well-dressed, he remarks that he looks twenty five. Unconcerned with money and having spent his time searching for spiritual fulfillment, Larry's good looks are symbolic of his kind and peaceful soul. Gray on the other hand, who has based his life on working and making money, has grown heavier and less attractive. Interestingly, though, Isabel looks even more beautiful after her family's financial problems, losing weight and growing into a beautiful woman.