Without hard work, nothing grows but weeds.
I can, therefore I am.
Begin to be now what you will be hereafter.
Expect problems and eat them for breakfast.
Well done is better than well said.
If you're going through hell, keep going.
Wherever you are - be all there.
To know oneself, one should assert oneself.
Who seeks shall find.
Always desire to learn something useful.
It's very expensive to be a professional tennis player with all the travel and the flights and the hotels and everything.