„The more it changes, the more it’s the same thing.“
Plus ça change, plus c'est la même chose.
The more it changes, the more it stays the same. http://www.oxforddictionaries.com/definition/english/plus-%C3%A7a-change
The more things change, the more they stay the same. https://en.wiktionary.org/wiki/the_more_things_change,_the_more_they_stay_the_same
The more that things change, the more they stay the same.
It changes superficially; but, underneath, its essence is always the same.
Les Guêpes, January 1849, vi
Also quoted by Rush in “Circumstances,” Hemispheres (October 29, 1978).