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.

Sometimes a faint voice based on instinct resonates far more strongly than overpowering logic.

Success is not about how much money we have in the bank, but it's about how many peoples' lives we have impacted through it. Success is experienced when we do things which are never done before.

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.

Philanthropy is not about giving money but about solving problems. While well-meaning, the idea of writing a check and calling it 'philanthropy' is extremely short-sighted and, unfortunately, extremely pervasive.

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

Helping people boost themselves out of poverty is the best way to make a lasting positive difference in a person's life.