In almost every area of human endeavor, the practice improves over time. That hasn't been the case for teaching.

There are people who don't like capitalism, and people who don't like PCs. But there's no-one who likes the PC who doesn't like Microsoft.

I would certainly use my voice to try and avoid anything that undermines confidence, so that parents are using vaccines fully.

The only definition by which Americas best days are behind it is on a purely relative basis.

Middle-income countries are the biggest users of GMOs. Places like Brazil.

All lives have equal value. And so you say, 'why do poor children die when other children don't? Why do some people have enough nutrition or reasonable toilets and other people don't?' So those basic needs that, through innovation, actually it's very affordable to bring them...to everyone.

Who decides what's in Windows? The customers who buy it.