If you are given a lot of money without having to work for it, you won't appreciate it as much as if you made it yourself.

At her birthday, my seven-year-old daughter will say that she wants these big cakes and certain expensive toys as presents, and I can't say no to her. It would just break my heart. But when I was little, for birthdays we just played outside and we were happy if we got any cake.

If I can't serve on grass, I can maybe help cut the grass, paint the lines and serve some strawberries.

Lately, my mind is like an orchestra. If you don't have the conductor, you don't know what to do. One guy is playing jazz, one guy is playing rock and roll, another classical. It's a big mess.

Although we didn't have much when I was growing up in Split, Croatia, my parents always tried to ensure that my sister and I had the things we needed, and it was enough for us.

When you are winning too much, sometimes you think you should never lose again. I am learning to lose.

I still break racquets, but now I do it in a positive way.