Mercenaries are disunited, ambitious, undisciplined, and treacherous; they are powerful when among those who are not hostile, but weak and cowardly when confronted by determined enemies; they have no fear of God, and do not maintain commitments with men.
Know who wrote that? Niccolò freaking Machiavelli. Which is weird, because although I read The Prince in high school, I had no idea he played Sellswords from Level 99 Games. I guess that part went totally over my head.