'Being green' is commendable, but I hope that people don't take too much pride and self-adoration because they shut off the water when they brushed their teeth. The truth of the matter is, conservation alone will do little to save our planet.

The United States of America became the envy of the world because we welcomed the best and brightest minds from anywhere on the planet and gave them the opportunity to succeed.

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

I've been an entrepreneur all my life, and my recent focus is on finding entrepreneurial solutions to address global challenges in healthcare and education.

The real metric of success isn't the size of your bank account. It's the number of lives in whom you might be able to make a positive difference.

Just as physical exercise is a well-known and well-accepted means to improve health for anyone, regardless of age or background, so can the brain be put 'into shape' for optimal learning.

Education should not be about building more schools and maintaining a system that dates back to the industrial revolution. We can achieve so much more, at unmatched scale with software and interactive learning.