"Conservatism, though a necessary element in any stable society, is not a social program; in its paternalistic, nationalistic, and power-adoring tendencies it is often closer to socialism than true liberalism; and with its traditionalistic, anti-intellectual, and often mystical propensities it will never, except in short periods of disillusionment, appeal to the young and all those others who believe that some changes are desirable if this world is to become a better place. A conservative movement, by its very nature, is bound to be a defender of established privilege. The essence of the liberal position, however, is the denial of all privilege, if privilege is understood in its proper and original meaning of the state granting and protecting rights to some which are not available on equal terms to others."
—— F. A. Hayek, 1956 Preface to "The Road to Serfdom"
4. I have already referred to the differences between conservatism and liberalism in the purely intellectual field, but I must return to them because the characteristic conservative attitude here not only is a serious weakness of conservatism but tends to harm any cause which allies itself with it. Conservatives feel instinctively that it is new ideas more than anything else that cause change. But, from its point of view rightly, conservatism fears new ideas because it has no distinctive principles of its own to oppose them; and, by its distrust of theory and its lack of imagination concerning anything except that which experience has already proved, it deprives itself of the weapons needed in the struggle of ideas. Unlike liberalism, with its fundamental belief in the long-range power of ideas, conservatism is bound by the stock of ideas inherited at a given time. And since it does not really believe in the power of argument, its last resort is generally a claim to superior wisdom, based on some self-arrogated superior quality.
The difference shows itself most clearly in the different attitudes of the two traditions to the advance of knowledge. Though the liberal certainly does not regard all change as progress, he does regard the advance of knowledge as one of the chief aims of human effort and expects from it the gradual solution of such problems and difficulties as we can hope to solve. Without preferring the new merely because it is new, the liberal is aware that it is of the essence of human achievement that it produces something new; and he is prepared to come to terms with new knowledge, whether he likes its immediate effects or not.
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Connected with the conservative distrust if the new and the strange is its hostility to internationalism and its proneness to a strident nationalism. Here is another source of its weakness in the struggle of ideas. It cannot alter the fact that the ideas which are changing our civilization respect no boundaries. But refusal to acquaint one's self with new ideas merely deprives one of the power of effectively countering them when necessary. The growth of ideas is an international process, and only those who fully take part in the discussion will be able to exercise a significant influence. It is no real argument to say that an idea is un-American, or un-German, nor is a mistaken or vicious ideal better for having been conceived by one of our compatriots.
A great deal more might be said about the close connection between conservatism and nationalism, but I shall not dwell on this point because it might be felt that my personal position makes me unable to sympathize with any form of nationalism. I will merely add that it is this nationalistic bias which frequently provides the bridge from conservatism to collectivism: to think in terms of "our" industry or resource is only a short step away from demanding that these national assets be directed in the national interest. But in this respect the Continental liberalism which derives from the French Revolution is little better than conservatism. I need hardly say that nationalism of this sort is something very different from patriotism and that an aversion to nationalism is fully compatible with a deep attachment to national traditions. But the fact that I prefer and feel reverence for some of the traditions of my society need not be the cause of hostility to what is strange and different.
(from the essay Why I Am Not A Conservative; full text at
http://www.geocities.com/ecocorner/intelarea/fah1.html )