I am still puzzled why those in the United States who truly believe in liberty should not only have allowed the left to appropriate this almost indispensable term but should even have assisted by beginning to use it themselves as a term of opprobrium. This seems to be particularly regrettable because of the consequent tendency of many true liberals to describe themselves as conservatives.

The Collected Works of F.A. Hayek: The fortunes of liberalism (ed. 1992)