I actually thought that it would be a little confusing during the same period of your life to be in one meeting when you're trying to make money, and then go to another meeting where you're giving it away. I mean is it gonna erode your ability, you know, to make money? Are you gonna somehow get confused about what you're trying to do?

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.

Certain teams are more careful in what they write. They generate less bugs. You can know that but it still doesn't mean there might be there might not be one bug that would be bad to ship the product with.

We have two other countries, Pakistan and Afghanistan - again it's the instability that is a problem there. So over the next several years, we expect to drive the number of [polio] cases back down to zero because that is likely to be the second disease after smallpox that we completely eradicate.

I hope corporations will dedicate a percentage of their top innovators' time to issues that could help people left out of the global economy. This kind of contribution is even more powerful than giving cash or offering employees' time off to volunteer. It is a focused use of what your company does best. It is a great form of creative capitalism, because it takes the brainpower and makes life better for the richest, and dedicates some of it to improving the lives of everyone else.

Paul and I, we never thought that we would make much money out of the thing. We just loved writing software.

Only a few businesses will succeed by having the lowest price, so most will need a strategy that includes customer services.