Today I was talking with a good friend of mine who is a very highly educated and experienced professional and above all a very good human being. He was sharing how he tried to be kind to everybody and how people took advantage, his unwillingness to sack inefficient employees was often leveraged for no good of the company. And he has been as such forced to be ruthless and be highly intolerant of inefficient employees.
On a similar note, recently I had a brief chat with Mr. Shabeer Bhatia of Hotmail fame. I asked him about his hiring secret (building a software product company in India). He said he had no hiring secret but he is very prompt in firing inefficient employees.