The only thing I understand deeply, because in my teens I was thinking about it, and every year of my life, is software. So I'll never be hands-on on anything except software.
Bill Gateshere are economies like China's economy where it's less than a tenth [of a percent] today, although it is growing, is quite small, because of the notion that the government takes care of everything, and Europe and China, philanthropy has not been nearly of the same scale.
Bill Gates