Quote by Billie Jean King
"You never know your limits until you test them."
More from Billie Jean King
"Be bold. If you're going to make an error, make a doozy, and don't be afraid to hit the ball."
"Champions keep playing until they get it right."
"I really believe in the philosophy that you create your own destiny."
"The winner's edge is not in a gifted birth, a high IQ, or in talent. The winner's edge is all mental."