I believe, in common with a great number of thinkers, and especially with many social scientists, that the distinction between laws in sense (a), i.e. statements describing regularities of nature, and laws in sense (b), i.e. norms such as prohibitions or commandments, is a fundamental one, and that these two kinds of law have hardly more in common than a name. But this view is by no means generally accepted; on the contrary, many thinkers believe that there are norms—prohibitions or commandments—which are ‘natural’ in the sense that they are laid down in accordance with natural laws in sense
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