Complex sentence: He drew a distinction between norms of decision and social norms or norms of conduct, for the latter actually govern the life in a society and can be regarded in popular consciousness, if not necessarily by lawyers, as law.
Split into simpler sentences: He drew a distinction between norms of decision and social norms or norms of conduct. The latter actually govern the life in a society and can be regarded in popular consciousness, if not necessarily by lawyers, as law.