Don't go into debt and don't spend a lot. It's not how much money you make, it's how much you spend.

I've never cared that much for cementing my place in history. Sports is so transitory, so ephemeral. It just seems like so much nonsense comparing me to Helen Wills Moody or Suzanne Lenglen or anybody else from some other time. One lesson you learn from sports is that life goes on without you.

Create your legacy, and pass the baton.

In the complete overall history of tennis, I figure I'll be worth a sentence or two.... That's why my place in the all-time rankings means so very little to me, because I know I won't be anybody's number one, and it's that same old thing: if you're not number one, then what does it really matter?

Don't go into debt and don't spend a lot. It's not how much money you make, it's how much you spend.

Every generation I think gets better usually [in tennis].

I knew after my first lesson what I wanted to do with my life.