“Politicians should be changed regularly, like diapers, and for the same reason.”
“Politicians and diapers have one thing in common. They should both be changed regularly, and for the same reason.”
“Politicians and diapers should be changed frequently, and for the same reason.”
“Politicians and diapers must be changed often, and for the same reason.”
“Minds, like diapers, need occasional changing.”
“There is no reason why the same man should like the same books at eighteen and at forty-eight”