“For the young — and especially the young writer — memory and imagination are quite distinct, and of different categories. In a typical first novel, there will be moments of unmediated memory (typically, that unforgettable sexual embarrassment), moments where the imagination has worked to transfigure a memory (perhaps that chapter in which the protagonist learns some lesson about life, whereas in the original the novelist-to-be failed to learn anything), and moments when, to the writer’s astonishment, the imagination catches a sudden upcurrent and the weightless, wonderful soaring that is the basis for the fiction delightingly happens.
These different kinds of truthfulness will be fully apparent to the young writer, and their joining together a matter of anxiety. For the older writer, memory and the imagination begin to seem less and less distinguishable. This is not because the imagined world is really much closer to the writer’s world than he or she cares to admit (a common error among those who anatomize fiction) but for exactly the opposite reason: that memory itself comes to seem much closer to an act of imagination than ever before. My brother distrusts most memories. I do not mistrust them, rather I trust them as workings of the imagination, as containing imaginative as opposed to naturalistic truth.”
— Julian Barnes, Nothing to Be Frightened Of