Karl Marx, he never worked at all
His wife bore 7 children. Only 3 of those children lived to be adults. The other 4 died young from the effects of living in poverty.
Karl Marx was a 'thinker'. He sat in a chair and thought about what it must be like to be a working man. Rather than experiencing the world as it was, Marx thought about how he wished it would be. Though he had never worked, Marx concluded that a working man was selling his soul to his boss.