We're all conditioned that we shouldn't like our brothers and sisters, that we should be angry and fight. But that's abnormal. A lot of people think that the way Serena and I are with one another is weird. It's not.

Every Olympics is something special. If you're fortunate enough to play for your country - there's just so much energy. It's truly amazing.

Losses have propelled me to even bigger places, so I understand the importance of losing. You can never get complacent because a loss is always around the corner. It's in any game that you're in - a business game or whatever - you can't get complacent.

Most definitely always been a passion, and always been one of my goals in life as a young person, to have my own business. My dad gave us his entrepreneurial mindset, so that was also ingrained, as well as the tennis. So in a lot of ways it's a part of making my parents proud. I think we all want to make our parents proud, you know?

I always like to win. But I'm the big sister. I want to make sure she has everything, even if I don't have anything. It's hard. I love her too much. That's what counts.

It's a great feeling to have accomplished what I have, but I want to do more.

My parents always told us, you know, you have to get your education. You're not supposed to become a statistic.