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.

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

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

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

There are so many people around the world in need of high-quality education and really starving for education.

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.

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.