In Judged by Ziyad Marar, the author was discussing Philip Roth’s The Human Stain, and its main character, Coleman Silk:
Coleman as a classics professor is well versed in the Greek tragedies which tell of our fateful destinies, but all the while he rages against this sense of inevitability in his own life and against conformity. He decides early on in life that he does not have to live like a tragic character, that he can make choices that push against the grand plans others may have for him. ‘This has been the purpose of the mighty gods. Silky’s freedom. The raw I. All the subtlety of being silky silk.’ And when his escape routes prove at times to be dead ends we see him trapped in the uncomprehending web of misconstruals and misunderstandings of others. The subtlety, the ‘raw I’, of being Coleman is only glimpsed by us, through the words of Nathan, his narrator.
What's exactly meant by "raw I" and "subtlety of being silky silk"?