 The conservative’s rejection of rationalism therefore cuts two ways; it undermines both socialism, and the doctrinaire, free-market rejection of socialism. Conservatives oppose rational planning, but do not dogmatically oppose planning that works. Scruton, for instance, believes that a market economy is most conducive to prosperity, but like Adam Smith, insists that markets should work within, and not erode, customs and moral and legal traditions. Burke’s and Scruton’s conservatism is not an economic view, but one that regards society as formed over a long period in relation with place and land; it treats rights and duties on the model of the common law, depending on tradition and practice, rather than on abstract notions of human rights (see entry on  rights).