The author deals with one aspect of the justification of governmental action and its product (the law). He focuses on the authoritative character of legal rule, analyzing the apparent capacity of governments to produce reasons for action not grounded on substantive moral considerations. The assumption of that capacity seems necessary in order to establish a general moral obligation to obey a government irrespective of the actions required. This question is faced in connection with the thesis that only a particular form (...) of government, democracy, is morally justified insofar as it rests on legal rules issued by a legitimate source. (shrink)