Be kind whenever possible. It is always possible.
It's always too early to quit.
Only the educated are free.
If you're going through hell, keep going.
Wherever you are - be all there.
To know oneself, one should assert oneself.
Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
Who seeks shall find.
You never know what motivates you.
It's very expensive to be a professional tennis player with all the travel and the flights and the hotels and everything.