Writers have attempted to portray cognitive difference in the novel many times, typically by way of narration. One famous example is found in The Sound and the Fury by William Faulkner. The first section is narrated by a character many call "an idiot" and Faulkner himself called this a failure. This highlights one of many issues with writing from the perspective of those with cognitive difference- the difficulty or else impossibility of doing so when one is not cognitively different themselves.