I don't think I would have spent time learning about the immune system if understanding vaccines weren't something I considered very important.
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 GatesThe part of uranium that's fissile - when you hit it with a neutron, it splits in two - is about 0.7%. The reactors we have today are burning that 0.7%.
Bill GatesWhen Paul Allen and I started Microsoft over 30 years ago, we had big dreams about software. We had dreams about the impact it could have.
Bill GatesSo not only are we saving lives now, we're creating the incentive for the breakthroughs that over the next generation will mean we can take AIDS, malaria and TB and bring those numbers dramatically down.
Bill GatesNow, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it's about 20 tons. For people in poor countries, it's less than one ton. It's an average of about five tons for everyone on the planet. And, somehow, we have to make changes that will bring that down to zero.
Bill Gates