Sentence:  We may now affirm that Plato's cave is inhabited by <WSD>Narcissus</WSD>. He already "knows", but the knowledge he possesses is still a bit confused, obscure (this knowledge is situated in the caves of the memory, a dark space much like <WSD>Narcissus's</WSD> place). 
Meaning of the word marked with <WSD> tags:  A youth who spurned the love of Echo and fell in love with his own reflection in a pool: in some versions of the myth, he drowned trying to reach it, while in others he sat fixated until a god took pity and transformed him into a flower.