To be inspired - that's the secret.

Life will throw everything but the kitchen sink in your path, and then it will throw the kitchen sink. It's your job to avoid the obstacles. If you let them stop you or distract you, you're not doing your job, and failing to do your job will cause regrets that paralyze you more than a bad back.

I've been motivated by overcoming challenge and overcoming the hurdles and obstacles that face me. There still is plenty out there to get motivated by.

I envy Pete Sampras's dullness. I wish I could emulate his spectacular lack of inspiration.

Tennis is at an amazing time when you've got two of the best players ever to play the game. You can argue the two very best playing in the same generation. It's a rivalry I think that we've never seen in our sport.

I think one of the greatest joys I have now in my career and in my profession is to be playing at an age where I can appreciate it more than I used to... It's a whole different lens you look through the older you get.

If I've learned nothing else, it's that time and practice equal achievement.