The most valuable lesson I learned in dealing with the ups and downs was to invest in my employees - to do all I could for them when the times were good.

Innovation is all about people. Innovation thrives when the population is diverse, accepting and willing to cooperate.

Entrepreneurship is like a computer game in which you have to master every level before achieving success. Startups repeatedly stumble and have to go back to the drawing board. The best way to skip some levels and to increase the odds of survival is to learn from others who have already played the game.

I used to have an obsession with building businesses and forgot about building health. I was focused on the destination instead of the journey. I caution you to not do the same.

I have 1.4 million followers on Twitter. I get very interesting, sometimes very diverse input from my followers. So it's sort of like this water cooler, digital water cooler, if you want to think about it, where you go and you listen to conversations that are happening that perhaps will shape your thinking.

The promise of the Internet is being held back by Visa, Master Card, American Express.

Alan Turing gave us a mathematical model of digital computing that has completely withstood the test of time. He gave us a very, very clear description that was truly prophetic.

I'm speaking out against social media bias.