Please explain in detail how this quote from Sontag "My subject is not physical illness itself but the uses of illness as a figure or metaphor. My point is that illness is not a metaphor, and that the most truthful way of being ill---is one most purified of, most resistant to, metaphoric thinking.” Relates and talks about anxiety and anorexia

Please explain in detail how this quote from Sontag "My subject is not physical illness itself but the uses of illness as a figure or metaphor. My point is that illness is not a metaphor, and that the most truthful way of being ill---is one most purified of, most resistant to, metaphoric thinking.” Relates and talks about anxiety and anorexia