Jethro learns an important lesson about maturity here: the actions make the man (or the adult), much more so than his (or their) education or position. In this light, the Confederate General Lee seems a much better example of manhood (or at least military leadership) than the Northern generals, because of his focus, disciplined and lack of vices like alcoholism, arrogance, or pride. Jethro also learns that that the relationship between a righteous cause and upstanding men isn’t a foregone conclusion. If good men can fight to defend bad ideas and bad men can fight to defend good ones, it becomes ever more important to be responsible for learning enough to make one’s own decisions (as Jethro is doing) and to guide one’s actions by self-determined conscience rather than just following the opinions of the crowd.