"In the United States, where it has become almost impossible to use "liberal" in the sense in which I have used it, the term "libertarian" has been used instead. It may be the answer; but for my part I find it singularly unattractive. For my taste it carries too much the flavor of a manufactured term and of a substitute. What I should want is a word which describes the party of life, the party that favors free growth and spontaneous evolution. But I have racked my brain unsuccessfully to find a descriptive term which commends itself."
"Why I Am Not a Conservative," postcript to The Constitution of Liberty  (Chicago: Henry Regnery, 1972)