Hayek wrote an essay, "Why I Am Not a Conservative" (included as an appendix to "The Constitution of Liberty"). In it he disparaged conservatism for its inability to adapt to changing human realities or to offer a positive political program, remarking: "Conservatism is only as good as what it conserves". Although he noted that modern day American and British conservatism share many opinions on economics with classical liberals, particularly a belief in the free market, he believed it is because conservatism wants to "stand still" whereas liberalism embraces the free market because it "wants to go somewhere". He was much more critical of conservativism in continental Europe which he saw as more similar to socialism. European conservatives, according to Hayek, are similar to socialists in their belief that social and political problems can be solved by placing right people in governmental positions and giving them the opportunity to rule without much restrictions. Both are less concerned with limiting state power and more concerned with arbitrarily using that power to promote their own goals and force their values on other people. Hayek also disliked conservative tendency to obscurantism, such as rejection of theory of evolution and naturalistic explanations of life because of supposedly problematic moral consequences that follow from them. He opposed conservatism for "its hostility to internationalism and its proneness to a strident nationalism", with its frequent association with imperialism. He also criticized the intolerance and lack of pluralism: