Montesquieu

When the entire nation is war­like, armed sla­ves are even less to be fea­red.

By the law of the Germans, a slave who stole some­thing which had been set down was sub­jec­ted to the penalty that would have been applied to a free man1 ; but if he took it by vio­lence, he was obli­ged only to res­tore the item he had taken.2 Among the Germans, acts based on cou­rage and strength were not repu­gnant. They made use of their sla­ves in their wars. Most repu­blics have always tried to hold down the cou­rage of sla­ves ; the German peo­ple, sure of them­sel­ves, had the idea of increa­sing the daring of their sla­ves ; always armed, they fea­red nothing from them ; they were ins­tru­ments of their ban­di­try or their glory.

Leges alamannorum, ch. v, §3.

Ibid. ch. v, §5 per virtutem.