People who say it cannot be done should not interrupt those who are doing it.

Success is not about seeking constant external motivation; it's about cultivating self-motivation and an unwavering belief in your own potential.

There's no greater challenge and there is no greater honor than to be in public service.

Success is not about seeking constant external recognition; it's about finding fulfillment in the positive impact you create in the lives of others and the world around you.

So next time someone complains that you have made a mistake, tell him that may be a good thing. Because without imperfection, neither you nor I would exist.

We're in hell right now, gentlemen. We can climb out of hell, one inch at a time.

Perseverance is a great element of success. If you only knock long enough and loud enough at the gate, you are sure to wake up somebody