I really do think cancer will largely be a solved problem. I think most of the infectious diseases like malaria - our foundation is very involved - once we're finishing polio eradication, then starting up this malaria eradication, and getting that done as fast as we can.

When I was in my 40s, Microsoft was my primary activity.

Improving the health & productivity of the poorest is one of the best investments you can make in the future of the world

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.

My parents are very successful, and I went to the nicest private school in the Seattle area. I was lucky. But I never had any trust funds of any kind, though my dad did pay my tuition at Harvard, which was quite expensive.

There are several hundred people who stayed in the Ebola-affected countries and continued to do the work, put themselves at great risk because medical workers are the most likely to be infected because they're helping out when the person's health is deteriorating, including quite a bit of bleeding as they're getting very, very sick.

I choose a lazy person to do a hard job. Because a lazy person will find an easy way to do it.