Always desire to learn something useful.
Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
The wise does at once what the fool does at last.
You never know what motivates you.
Wherever you are - be all there.
If you're going through hell, keep going.
I can, therefore I am.
To know oneself, one should assert oneself.
Never complain and never explain.
I think this is the biggest win in my career. To beat Venus in Wimbledon is just something amazing.