I am quite prepared to admit that modern western thought is shot through with contradictions. For example, it is not coherent to think both that the idea of human nature is an illusion and that eugenics is an out-and-out evil; or to claim to be a democrat and exclude a priori the topic of eugenics from political debate. However, I personally very much doubt that the notions of nature and democracy are themselves in crisis. In my view they simply give rise to semantic confusion and false problems that certain basic twentieth-century discoveries - in the field of physics, anthropology and political science - ought to be able to clear up, if they were better known. We shall just touch on a few thinkers whose work may give us some pointers to a clearer, calmer view of things. First a philosopher, Raymond Ruyer (1902-1987), and an economist, Joseph Schumpeter (1883-1950), two of whose key ideas this paper will combine: a neo-Aristotelian conception of nature, implying the existence of regulating principles and norms, to which humans and their societies, like everything else, are subject; a procedural conception of democracy that says it is not an end in itself but, under certain conditions, an appropriate means of making political decisions and settling disputes. And in addition some anthropologists, who helped either to put human beings back into a neo-Aristotelian world, or to define more accurately the essence of the political: Claude Lévi-Strauss, whose structuralism gave back its full importance to the notion of formal cause and even to the idea of final cause, and André Leroi-Gourhan, who confirmed that ‘art imitates nature’ by demonstrating that technical skill is a natural extension of life, whose processes and results it mimics; Arthur Maurice Hocart, who demonstrated the ritual origin of all institutions, particularly political ones.