"Censorship feeds the dirty mind more than the four-letter word itself"

This quote by Dick Cavett suggests that censorship can be more damaging than the words or concepts it is trying to suppress. By censoring particular words or ideas, it can create an environment of interest and intrigue, which can result in people being more interested in the censored material than they would have been if it had been left alone. This can result in people having a more "dirty mind" than they would have had if the material had actually been left uncensored. To put it simply, censorship can lead to individuals being more interested in the product it is attempting to suppress, which can lead to a more "filthy mind" than if the product had been left alone. This quote suggests that censorship can be more destructive than the words or concepts it is trying to reduce, which it can cause people having a more "unclean mind" than they would have had if the product had been left uncensored.