Once humans traded their hunter-gatherer existences for more settled communities, we began a quest to make our lives better and more comfortable, but we've also been sucking precious finite resources from our environment ever since.

When you experience a failure as a leader, don't hide it - talk about it. Your missed opportunity will encourage others to take risks.

There are as many ways to help another human being as there are people in need of help. For some, the urgent need is as basic as food and water. For others, it is an opportunity to develop a talent, realize an idea, and reach one's full potential.

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

Athletes at all ages are bigger and stronger than ever before. And they are being encouraged - sometimes even incentivized, as we recently learned was the case on at least one National Football League team - to play to injure.

As a father, I believe that involving children in sports at a young age is generally, a wise proposition. I believe that healthy competition is... well... healthy; that sporting events foster a spirit of teamwork that far surpasses the events themselves; and that active participation keeps children moving and is good for their self-esteem.

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.