SectionIV。
Thesamesubjectcontinued。
Menfrequently，whiletheystudytoimprovetheirfortunes，neglectthemselves；andwhiletheyreasonfortheircountry，forgettheconsiderationsthatmostdeservetheirattention。
Numbers，riches，andtheotherresourcesofwar，arehighlyimportant:butnationsconsistofmen；andanationconsistingofdegenerateandcowardlymen，isweak；anationconsistingofvigorous，public-spirited，andresolutemen，isstrong，Theresourcesofwar，whereotheradvantagesareequal，maydecideacontest；buttheresourcesofwar，inhandsthatcannotemploythem，areofnoavail。
Virtueisanecessaryconstituentofnationalstrength: