“All fiction is metaphor. Science fiction is metaphor. What sets it apartfrom older forms of fiction seems to be its use of new metaphors, drawn fromcertain great dominants of our contemporary life -- science, all the sciences,and technology, and the relativistic and the historical outlook, among them.Space travel is one of these metaphors; so is an alternative society, analternative biology; the future is another. The future, in fiction, is ametaphor.A metaphor for what?If I could have said it non-metaphorically, I would not have written all thesewords, this novel; and Genly Ai would never have sat down at my desk and usedup my ink and typewriter ribbon in informing me, and you, rather solemnly,that the truth is a matter of the imagination.”