But the same words which Metellus used in making his decree, the others, whom you appealed
 to, likewise used. Was not this the language of them all,—that although that which a
 household was said to have done by means of men armed and collected in a violent manner, could
 not possibly be done rightly, still they would add nothing, And they ware right, O judges. For
 if, when there is a refuge open to them, still slaves commit these wickednesses with the
 greatest audacity, and masters avow them with the greatest shamelessness, what do you think
 would be the case if the praetor were to decide that it is possible that such murders should
 be committed lawfully? Does it make any difference whether the magistrates establish a defence
 for a crime, or give people power and liberty to commit crime?