Isaac Asimov: “Consciously? Heavens, no! Unconsciously? How can one avoid it?”As reported by Mental Floss (via Wil Wheaton). Wheaton goes on to discuss reading those works of literature again, by choice, as an adult, and how much more he enjoyed them.
Joseph Heller: “Yes, I do intentionally rely on symbolism in my writing, but not to the extent that many people have stated…No, I do not subconsciously place symbolism in my writing, although there are inevitably many occasions when events acquire a meaning additional to the one originally intended.”
Ray Bradbury: “No, I never consciously place symbolism in my writing. That would be a self-conscious exercise and self-consciousness is defeating to any creative act. Better to let the subconscious do the work for you, and get out of the way. The best symbolism is always unsuspected and natural.”
Not Really Related: Colin Nissan offers a humorous take on how to write better.