The primary purpose of the paper is the broadly exegetical one of explaining and connecting Heidegger's many remarks, made in several different contexts of enquiry, on nature. The three main contexts are those of ontology, scientific methodology, and technology. After showing how Heidegger's central theses in these contexts are related to one another, I argue, in the final section, that his observations on scientific method are pivotal. Unless these are secured, his further claims about ontology and technology lose their essential (...) support. (shrink)