You never know what motivates you.
Begin to be now what you will be hereafter.
Never complain and never explain.
Be kind whenever possible. It is always possible.
Problems are not stop signs, they are guidelines.
If you can dream it, you can do it.
Things do not happen. Things are made to happen.
Know or listen to those who know.
Only the educated are free.
Expect problems and eat them for breakfast.
It's very expensive to be a professional tennis player with all the travel and the flights and the hotels and everything.