Current ethos in Silicon Valley is that if you build a website that people keep coming back to and is changing the lives of millions, you can eventually make money.

Universities have come to realize that online is not a fad. The question is not whether to engage in this area but how to do it.

Start marching forward, even when into the new and unknown, and don't be deterred by obstacles.

As a society, we can and should invest more money in education.

The world is noisy and messy. You need to deal with the noise and uncertainty.

Our approach to education has remained largely unchanged since the Renaissance: From middle school through college, most teaching is done by an instructor lecturing to a room full of students, only some of them paying attention.

Even though there is rampant unemployment in many parts of the world, there are still large numbers of jobs that are going unfilled because employers are having a hard time identifying people with the right set of skills.