We believe unbelievable progress can be made, in both inventing new vaccines and making sure they get out to all the children who need them.

When you program, you want to think you're writing the best possible program for the... for the task you're trying to solve.

If African farmers can use improved seeds and better practices to grow more crops and get them to market, then millions of families can earn themselves a better living and a better life.

I'm serious when I do my work. I'm not serious when I'm home with my kids.

Teaching is the human thing, in terms of building the kids' self-confidence, so if we take the broad ways that we want to see society to be better, science can only provide certain pieces of that.

Learn from your unhappy customers.

Haiti should remind us all that there is an immediate need to invest in and promote long-term development projects that are sustainable, scalable, and proven to work.