The final selection in C.S. Lewis's On Stories and Other Essays on Literature (ed. Walter Hooper) is an "informal conversation" between CSL, Brian Aldiss, and Kingsley Amis. Excerpt:
LEWIS: Would you describe Abbott's Flatland as science-fiction? There's so little effort to bring it into any sensuous—well, you couldn't do it, and it remains an intellectual theorem. Are you looking for an ashtray? Use the carpet.
AMIS: I was looking for the Scotch, actually.
LEWIS: Oh yes, do, I beg your pardon...