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.

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

In many of our [online] courses, the median response time for a question on the question and answer forum was 22 minutes - which is not a level of service I have ever offered to my Stanford students.

If a student takes a Stanford computer class and a Princeton business class, it shows they are motivated and have skills. We know it has helped employees get better jobs.

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.

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

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.