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

Should there be cameras everywhere in outdoor streets? My personal view is having cameras in inner cities is a very good thing. In the case of London, petty crime has gone down. They catch terrorists because of it. And if something really bad happens, most of the time you can figure out who did it.

If you've found some way to educate yourself about engineering, stocks, or whatever it is, good employers will have some type of exam or interview and see a sample of your work.

I believe innovation is the most powerful force for change in the world. People who are pessimistic about the future tend to extrapolate from the present in a straight line. But innovation fundamentally shifts the trajectory of development.

By 2018, an estimated 63 percent of all new U.S. jobs will require workers with an education beyond high school. For our young people to get those jobs, they first need to graduate from high school ready to start a postsecondary education.

Over time, yes, countries will need to look at specific GMO products like they look at drugs today, where they don't approve them all. They look hard at the safety and the testing. And they make sure that the benefits far outweigh any of the downsides.

With the states release today of a set of clear and consistent academic standards, our nation is one step closer to supporting effective teaching in every classroom, charting a path to college and careers for all students, and developing the tools to help all children stay motivated and engaged in their own education. The more states that adopt these college and career based standards, the closer we will be to sharing innovation across state borders and becoming more competitive as a country.