"A radical is a man with both feet firmly planted — in the air. A conservative is a man with two perfectly good legs who, however, has never learned to walk forward. A reactionary is a somnambulist walking backwards. A liberal is a man who uses his legs and his hands at the behest — at the command — of his head."
January 1, 1970
https://en.wikiquote.org/wiki/Radical_centrism