If Africa seeks prosperity, it must provide for the health and nutrition of all – including the poorest.

I watched the piles of feces go up the conveyor belt... They made their way through the machine... A few minutes later I took a long taste of the end result: a glass of delicious drinking water.

We're changing the world with technology.

India just went 3 years with no cases [of polio]. Pakistan is our toughest location right now because some parts of the Taliban have not allowed vaccinators to come in and have even attacked vaccinators. We are hopeful this will get resolved since no one wants their kid to be paralyzed. I spend a lot of time making sure the polio campaign is doing the best it can. We have great computer models that help guide our activities.

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

We are not even close to finishing the basic dream of what the PC can be.

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