Being positive in a negative situation is not naive. It's leadership.

I want to be remembered as a great player, but I guess it will be as a player who got angry on a tennis court.

Do you have any problems, other than that you're unemployed, a moron, and a dork?

The important thing is to learn a lesson every time you lose.

As they say in sports, the older you get, the better you used to be.

My greatest strength is that I have no weaknesses.

You cannot be serious!

Don't let the silly little dramas of each day get you down. For you are here to do great things.

Happiness is a choice, not a result. Nothing will make you happy until you choose to be happy.

It doesn't matter how much you want. What really matters is how much you want it.

Remember why you started, remember where you're headed, think of how great it will be to get there, and keep going.

Look, really look, at how beautiful this day is. Let go of the worries and anxieties and judgments, and see the beauty.

Instead of being intimidated by the limitations, be inspired to find new ways around them.

If something goes wrong, don’t whine about it. Have a spine about it. Adjust, adapt, and move forward.

Don’t make excuses for why you can’t get it done. Focus on all the reasons why you must make it happen.

Winners win not because they're allowed to, but because they decide to.

Today is plenty; right now is enough. Tomorrow will come in good time. Until it does, live the depth of now.

When you think you know it all, there's not much that you'll learn.

Even in the most difficult situation there is always, somehow, a way to triumph