Corruption is one of the most common reasons I hear in views that criticize aid.

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

Software is different than other products um, partly because it's, it's not physical and, and partly because of its complexity. You can express in software millions of different cases and making sure that you handle all of them correctly is extremely difficult.

Nigeria has moved into low-middle-income, but their north is very poor, and the health care systems there have broken down.

Sometimes, I think my most important job as a CEO is to listen for bad news. If you don't act on it, your people will eventually stop bringing bad news to your attention and that is the beginning of the end.

In programming when you're making a change you have to know all the affected places, and you have to be able to model in your head what the performance impact will be.

I think Ebola is a great example of where the world really needs to come together. The three countries where this outbreak took place have had a lot of civil war, very weak health systems. And so, it did take a while for people to understand ....that eventually what we saw was a very unique Ebola epidemic. I think it is quite impressive what's being pulled together, and I think we will be able to get this under control.