In the business world today, failure is apparently not an option. We need to change this attitude toward failure - and celebrate the idea that only by falling on our collective business faces do we learn enough to succeed down the road.

It's a simple fact: no individual can be good at everything. Everyone needs people around them who have complimentary sets of skills.

Being a father has been, without a doubt, my greatest source of achievement, pride and inspiration. Fatherhood has taught me about unconditional love, reinforced the importance of giving back and taught me how to be a better person.

Think so big, so audacious that people will think you are crazy.

My father was a civil servant in northern India where I was born. As a boy I saw the dire effects of poverty and illiteracy, especially on women and children. It often seemed that the only thing separating me from them was luck.

I believe we need a more opportunistic and democratic approach to lunar exploration, now that we're shifting from U.S. government-sponsored space exploration to private expeditions.

I believe that entrepreneurs play an unmatched role and the accelerating pace of innovation is transforming the face of global challenges. You must think about the solution differently when you're trying to impact 1 billion people rather than affecting 1 million people.