Serena, however, completely denied that and said all the "quotes" she read, it was a "little bit disappointing".
"I'm beyond disappointed", Williams said.
"I gave up so much time with my daughter and time with my family all for this moment". I think it's normal.
Every time she steps on the court against Maria, it looks like she is still looking out for a revenge for the 2004 Wimbledon Final defeat. "I'm just going to do what the doctor thinks I should do".
She said: "I guess they say that because I played a good match".
"She's a tough opponent", said Wozniacki.
"I can only take solace in the fact I'm going to continue to get better". "I was surprised about that, to be honest". You know, I was, like, "oh, okay".More news: Nigeria Must Improve Before World Cup, Admits Mikel
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"The book was a lot about me", Williams continued.
Nadal will meet Diego Schwartzman in the men's quarters after the Argentine fought from two sets behind to win 1-6, 2-6, 7-5, 7-6 (7-0), 6-2 over Kevin Anderson.
The French Open was the Thirty six-year-old Williams' first appearance at a Grand Slam since the birth of her daughter in September, and the former World No.1 scored victories over Kristyna Pliskova, No.17 seed Ashleigh Barty and No.11 seed Julia Goerges over week one in singles.
Sharapova, herself making a French Open comeback after missing the last two editions following a doping ban, will face Garbine Muguruza in the last eight.
Dressed in the black bodysuit with a red band around the waist she resembled a superhero - not just a supermum - and was playing as if she had never been away.
"She's been playing for over a year now". I've never felt this in my life - it's so painful. Since then though, Sharapova has largely failed to down Serena.
Williams has defeated Sharapova 18 straight times and 19 times in 21 matches. You know, despite the record that I have against her, I always look forward to coming out on the court and competing against the best player.
Williams paid the price of contesting six singles and doubles matches in seven days after just four matches in the previous 16 months following childbirth a year ago.