"The success of authors such as J M Barrie and J K Rowling depends on the fact that all children know they are magic. No work can be successful unless it in some way confirms some sort of fundamental knowledge that everybody already knows. But to be wildly successful, as these authors are, they must also appear to uphold the popular opinion that magic does not 'really' exist, by making it appear so untrue to life that it obviously cannot happen like this. This fulfils people's common fantasies without upsetting their so-called 'scientific' rationality." (G. Spencer-Brown's autobiography ("Volume 1, Infancy and Childhood").