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.
Before even reading it, I was a little skeptical to see how he was going to explain this. I enjoyed the stories that explain his rationale, for some reason I cannot fathom myself trusting my enemies before "true" friends. Mr. Greene kept giving reasons for why you should not work with friends and to some extent it maybe true, but I am a firm believer that there are signs early on that we tend to ignore until it is too late and we have ruin a business and a friendship.
Same thing happened in the stories he told about law two, I believe that there was signs early from me reading that the main character chose to ignore. Now if someone chooses to ignore obvious signs then.... maybe you should be more careful in how you choose friends.
There was somethings that he said that I agreed with such as, "All working situations require a kind of distance between people. You are trying to work, not make friends; friendliness (real or fake) only obscures that fact. The key to power, then, is the ability to judge who is best able to further your interests in all situations. Keep friends for friendship, but work with the skilled and competent."
What if your friend(s) are the skilled and competent???? Hmmm......
Do you believe that friends with mutual interest could be contaminated because of personal feelings?
What do you think of law two?