Great entrepreneurs focus intensely on an opportunity where others see nothing.

What separates sports from entrepreneurism, however, is that in business we constantly have to overcome undefined and unpredictable challenges. Athletes train for specific events and conditions, whereas entrepreneurs generally have little idea what they will encounter along the way.

Because I was poor I had one special advantage. When you are poor, and basic survival is your concern, you have no alternative but to be an entrepreneur. You must take action to survive just as you must take action to seize an opportunity.

All the conservation efforts in the world won't be enough to make a dent in the oncoming sustainability crisis our planet faces.

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.

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.

Philanthropy without scale and sustainability is like any other bad business that will simply wither and die on the vine.