boys were encouraged to earn virtus there were also limits put on showing virtus in public. Virtus was often associated with being aggressive and this could be very dangerous in the public sphere and the political world. Displays of violent virtus were controlled through several methods. Men seeking to hold political office typically had to follow the cursus honorum. Many political offices had an age minimum which ensured that the men filling the positions had the proper amount of experience in the military and in government. This meant that even if a man proved himself capable of filling a position or was able to persuade people that he was capable, he would not necessarily be able to hold the position until he had reached a certain age. This also served to ensure that in elections of public offices no one had a certain advantage over another person because by the time most men went into public office they would have retired from military service. Furthermore, before any Roman soldier could partake in single combat he had to gain permission from his general. This procedure was meant to keep soldiers from putting themselves in extremely dangerous situations that they may or may not have been able to handle in order gain virtus. The concept of virtus also tended to be a concept of morality as far as politics were concerned. This could range from the very literal definition of manliness seen in aggression and the ruthless acquisition of money, land, and power, or the lighter, more idealistic political meaning which almost took on the extended meaning of "pietas", a man who was morally upright and concerned with the matters of the state. Plautus in Amphitruo contrasted virtus and ambitio. Virtus is seen as a positive attribute, though ambitio itself is not necessarily a negative attribute but is often associated with negative methods such as bribery. Plautus said that just as great generals and armies win victory by virtus, so should political candidates. Ambitio "is the wrong method of reaching a good end." Part of virtus, in the political sphere was to deal justly in every aspect of one's life, especially in political and state matters. According to Brett and Kate McKay the Roman identity exists in a paradigm, it was a contest culture and honor culture, Roman's believed "your identity was neither fixed nor permanent, your worth was a moving target,