A quote from playwrite George Bernard Shaw

"You must all know half a dozen people at least who are no use in this world, who are more trouble than they are worth. Just put them there and say Sir, or Madam, now will you be kind enough to justify your existence? If you can't justify your existence, if you're not pulling your weight, and since you won't, if you're not producing as much as you consume or perhaps a little more, then, clearly, we cannot use the organizations of our society for the purpose of keeping you alive, because your life does not benefit us and it can't be of very much use to yourself."