'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.

Growing up in India, I knew all I needed to change the world was one good opportunity, and I prepared myself for it. When that opportunity came - in the form of the chance to earn an engineering degree - I was ready.

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.

Go where your customers take you! For example, did you know that Sony's first product was a rice cooker? Since abandoning the rice cooker, it has merely managed to become the world's biggest consumer electronics company.

My children have been learning lessons about entrepreneurship since they were in kindergarten, and these lessons are paying off: even though they are only 22, 18, and 15, they have already collectively launched three nonprofit organizations and several new businesses.

Each one of us has the power to be the change we want to see in the world, making the world a better place.

Trust your gut instinct over spreadsheets. There are too many variables in the real world that you simply can't put into a spreadsheet. Spreadsheets spit out results from your inexact assumptions and give you a false sense of security. In most cases, your heart and gut are still your best guide.