Be wary of friends—they will betray you more quickly, for they are easily aroused to envy. They also become spoiled and tyrannical. But hire a former enemy and he will be more loyal than a friend, because he has more to prove. In fact, you have more to fear from friends than from enemies. If you have no enemies, find a way to make them.
“I can’t believe Rowley went and backstabbed me like that. While I was sitting there getting chewed out by Mr. Winsky, I was thinking, I need to remember to give my friend a lecture about loyalty.”