One who acts thus is no leader of men, no present help to his sovereign, no master of victory.
To lead is a serious business in which personal foibles have no place. Paradoxically, the leader has to put themselves last, seeking first to win at the minimum cost. Glory is a result, not a goal. Those who seek glory are likely to find only ignominy.
The same effect happens in business. Those who seek only profit at the expense of employee and customer satisfaction may succeed in the short term but will ultimately and massively fail.