People don't want to believe that technology is broken. Pharmaceuticals, robotics, artificial intelligence, nanotechnology - all these areas where the progress has been a lot more limited than people think. And the question is why.

If you focus on near-term growth above all else, you miss the most important question you should be asking: will this business still be around a decade from now?

Twitter is hard to evaluate. They have a lot of potential. It's a horribly mismanaged company — probably a lot of pot-smoking going on there. But it's such a solid franchise it may even work with all that.

Long-term planning is often undervalued by our indefinite short-term world.

There are still many large white spaces on the map of human knowledge. You can go discover them. So do it. Get out there and fill in the blank spaces. Every single moment is a possibility to go to these new places and explore them.

Higher education holds itself out as a kind of universal church, outside of which there is no salvation.

I no longer believe that freedom and democracy are compatible.