When a country has the skill and self-confidence to take action against its biggest problems, it makes outsiders eager to be a part of it.

I don't have a magic formula for prioritizing the world's problems.

Capitalism has shortfalls. It doesn't necessarily take care of the poor, and it underfunds innovation, so we have to offset that.

Me and my dad are the biggest promoters of an estate tax in the US. It's not a popular position.

Although it is almost eliminated in rich countries, it's still one of the biggest killers worldwide. This is a very tough disease.

You are as young as your faith, as old as your doubt; as young as your self-confidence, as old as your fear; as young as your hope, as old as your despair