When I was 27 years old, I left a very demanding job in management consulting for a job that was even more demanding: teaching. I went to teach seventh graders math in the New York City public schools.

I'm not perfect; I make mistakes all the time. All I can do is to try my best to learn from my mistakes, take responsibility for them, and do a better job tomorrow.

If you think it's expensive to hire a professional to do the job, wait until you hire an amateur.

It is a well-known fact that those people who must want to rule people are, ipso facto, those least suited to do it... anyone who is capable of getting themselves made President should on no account be allowed to do the job.

Find joy in everything you choose to do. Every job, relationship, home... it's your responsibility to love it, or change it.

What new technology does is create new opportunities to do a job that customers want done.

I think that life is difficult. People have challenges. Family members get sick, people get older, you don't always get the job or the promotion that you want. You have conflicts in your life. And really, life is about your resilience and your ability to go through your life and all of the ups and downs with a positive attitude.

Take your job seriously, but don't take yourself too seriously.

The price of success is hard work, dedication to the job at hand, and the determination that whether we win or lose, we have applied the best of ourselves to the task at hand.