Try never to be the smartest person in the room. And if you are, I suggest you invite smarter people... or find a different room.

I have no doubt that in the future, wearable devices like Fitbit will know my blood pressure, hydration levels and blood sugar levels as well. All of this data has the potential to transform modern medicine and create a whole new era of personalized care.

Try never to be the smartest person in the room. And if you are, I suggest you invite smarter people... or find a different room.

It's exciting to see how fast your kids learn and grow. I'm not too worried about them, particularly the ones who like to break rules and don't follow instructions; those are the ones that will do just fine because they know what's important to them.

I'm a big believer in online communities and in user-generated content.

One of the things was to create a kind of amnesty environment.

If you want to sustain excellence over a long time, you'd better come up with a system that works well. Anyone can sprint for a little while, but you can't sprint for forty years.