The Marxist idea of socialism was also heavily opposed to utopian socialism. Dystopian fiction emerged as a response to utopian fiction. He envisioned man as continually progressing toward a perfectly utopian society. Pravic reflects many aspects of the philosophical foundations of utopian anarchism. He called his mixed economic model "Mutualism", a term derived from French utopian socialist thinking. Dahrendorf believed in two approaches to society, Utopian and Rationalist. This moderate group of pragmatists were unenthusiastic about Mao's utopian visions. They invested it with their preoccupations of modernity and their dreams of an Utopian future. Pluralists likewise reject historicism and utopian thinking. Criticism of anarchism mainly focuses on claims of it being internally inconsistent, violent and utopian. The colony, organized under the principles of utopian socialism, survived for 31 years. Others view them as reactionaries trying to recapture an idyllic and utopian past. American conservatism is best characterized as a reaction against utopian ideas of progress. Once in control of the state he sought to create a utopian society. Among these utopian socialists were Charles Fourier and Robert Owen.