I find it strange that the Gates always talk about lives that are "healthy and productive". Can't it be "healthy and happy"? Why should anyone seek productiveness?
Because your material circumstances are a big influence on both your health and your happiness. If you're going to be materially prosperous, then either you have to live in a society with generous welfare, or you need well-off parents, or you need to be productive (and not have what you produce stolen from you).
