Your most unhappy customers are your greatest source of learning.

Sorghum is kind of unusual. It can go to very high heats, but it's not as productive in most environments as maize is.

Two out of every five people on Earth today owe their lives to the higher crop outputs that fertilizer has made possible.

I believe that if you show people the problems and you show them the solutions they will be moved to act.

Some very poor countries run great vaccination systems, and some richer ones run terrible programs.

If somebody is considering being willing to go out and work in the field in global health, those are a particular class of heroes because it's hard to work in those places. Our foundation gets so many of our learnings from people who've been out there and seen, "this tool is not going to work there, there's more of a problem here than you know." You should really get involved in that.

Microsoft is involved in setting some fairly key standards and people are afraid of it because they think, Geez, they are quite capable. It's daunting, I suppose.