the second question is, whether it is expedient to place a reward on the head of a known criminal, and to make of every citizen an executioner by arming him against the offender. either the criminal has fled from his country or he is still within it. in the first case the sovereign encourages the commission of a crime and exposes its author to a punishment, being thereby guilty of an injury and of an usurpation of authority in the dominions of another, and authorising other nations to do the same by himself. in the second case the sovereign displays his own weakness, for he who has the power wherewith to defend himself seeks not to purchase it. moreover, such an edict upsets all ideas of morality and virtue,[195] which are ever ready to vanish from the human mind at the very slightest breath. now the laws invite to treachery, and anon they punish it; with one hand the legislator tightens the bonds of the family, of kindred, and of friendship, whilst with the other he rewards whosoever violates and despises them; always in self-contradiction, he at one moment invites to confidence the suspicious natures of men, and at another scatters mistrust broadcast among them. instead of preventing one crime, he causes a hundred. these are the resources of weak nations, whose laws are but the temporary repairs of a ruined building that totters throughout. in proportion as a nation becomes enlightened, good faith and mutual confidence become necessary, and tend ever more to identify themselves with true policy. tricks, intrigues, dark and indirect paths, are for the most part foreseen, and the general quickness of all men collectively over-reaches and blunts that of single individuals. the very ages of ignorance, in which public morality inclines men to obey the dictates of private morality, serve as instruction and experience for the ages of enlightenment. but laws which reward treachery and stir up clandestine hostility by spreading mutual suspicion among citizens, are opposed to this union of private and public morality, a union which is so necessary, and to the observance of which individuals might owe their happiness, nations their peace, and[196] the universe a somewhat longer period of quiet and repose from the evils which at present pervade it.