It’s useful to compare our preparations for epidemics with our preparations for war.

Humanity’s greatest advances are not in its discoveries – but in how those discoveries are applied to reduce inequity.

When I say "an energy miracle," I mean that there will be some form of energy whose 24 hour cost really is competitive with hydrocarbons given, say, 20 years of learning curve. You invent it, then you look at how much its costs go down over the next 20 years, that it really beats hydrocarbons.

I'm going to retain a lot of Microsoft's stock.

There certainly is a case to be made that taxes should be more progressive.

Helping convene global stakeholders to establish a set of measurable, actionable and consensus-built goals focused on extreme poverty is invaluable.

Well the protester I think is a very powerful thing. It's basically a mechanism of democracy that, along with capitalism, scientific innovation, those things have built the modern world. And it's wonderful that the new tools have empowered that protestor so that state secrets, bad developments are not hidden anymore.