The most valuable lesson I learned in dealing with the ups and downs was to invest in my employees - to do all I could for them when the times were good.

Innovation is all about people. Innovation thrives when the population is diverse, accepting and willing to cooperate.

Entrepreneurship is like a computer game in which you have to master every level before achieving success. Startups repeatedly stumble and have to go back to the drawing board. The best way to skip some levels and to increase the odds of survival is to learn from others who have already played the game.

I used to have an obsession with building businesses and forgot about building health. I was focused on the destination instead of the journey. I caution you to not do the same.

I wanted success. I was ambitious. I didn't leave United to see out my career picking up wages.

I don't think you're going to be seeing the U.S. employing large army divisions to deal with small terrorist groups again. I don't think they're going to be occupying foreign nations in order to dry up terrorist groups within them. I think that lesson has been learned.

I've been playing against older and stronger competition my whole life. It has made me a better tennis player and able to play against this kind of level despite their strength and experience.

I hope the millions of people I've touched have the optimism and desire to share their goals and hard work and persevere with a positive attitude.