If you're changing the world, you're working on important things. You're excited to get up in the morning.

The more you dwell in the past, the less you prepare for the future.

"Life on a lifeboat isn't much of a life. It is like an end game in chess, a game with few pieces. The elements couldn't be more simple, nor the stakes higher."

The most important thing is to enjoy the journey.

If you don’t believe in yourself, no one else will.