There is a post on the Main Board in response to this poster.
According to the author, Len Brown, he claims the quote derives from two separate sources, (meaning two separate quotes?) He actually said the line "sex is on everybody's mind" about characters in Alan Bennett's television plays.
Brown suggested this quote:
"whether you like me or not, I remain an individual...individually nauseating or individually interesting. The key word in my vocabulary is individualism".
Umm, that quote shorten to "whether you like me or not, I remain an individual..." would have been a nice one to use, too, or "The key word in my vocabulary is individualism."